diff --git a/README.MD b/README.MD
index ecb1c39..048311f 100644
--- a/README.MD
+++ b/README.MD
@@ -4,6 +4,19 @@
 
 MirrorFlower(镜花)是一款基于 AI 的代码安全审计工具，支持多种编程语言的代码分析，可以帮助开发者快速发现代码中的潜在安全漏洞。支持DeepSeek-R1，ChatGPT-4o等多种大模型。
 
+## 更新记录
+
+### 2024-02-11
+- 完善了Python代码分析功能：
+  - 添加了完整的依赖分析，支持追踪导入关系和别名
+  - 增强了函数调用分析，支持类方法和实例方法的调用追踪
+  - 添加了变量使用分析，支持追踪全局变量和实例变量
+  - 改进了类继承分析，支持多级继承路径分析
+- 优化了分析器架构：
+  - 使用访问者模式重构了代码分析逻辑
+  - 添加了类型提示和详细文档
+  - 改进了错误处理机制
+
 ## 支持的API接口
 
 FREEGPTAPI：https://github.com/popjane/free_chatgpt_api
@@ -143,11 +156,6 @@ OPENAI_MODEL=your_preferred_model
 uvicorn backend.app:app --reload
 ```
 
-5. 访问Mirror-Flower
-```bash
-http://localhost:8000/ui
-```
-
 ## 注意事项
 
 1. 文件大小限制：10MB
diff --git a/backend/__pycache__/app.cpython-313.pyc b/backend/__pycache__/app.cpython-313.pyc
index 7cecd47..741ceac 100644
Binary files a/backend/__pycache__/app.cpython-313.pyc and b/backend/__pycache__/app.cpython-313.pyc differ
diff --git a/code_analyzer.py b/code_analyzer.py
new file mode 100644
index 0000000..1b1c62a
--- /dev/null
+++ b/code_analyzer.py
@@ -0,0 +1,281 @@
+import ast
+from typing import Dict, Set, List, Optional, Union
+from pathlib import Path
+from dataclasses import dataclass
+
+@dataclass
+class AnalyzerConfig:
+    max_workers: int = 4  # 并行处理的最大线程数
+    ignore_patterns: List[str] = None  # 要忽略的文件模式
+    follow_imports: bool = True  # 是否分析导入的模块
+    max_depth: int = 3  # 分析的最大深度
+    encoding: str = 'utf-8'  # 文件编码
+
+class CodeAnalyzer:
+    def __init__(self, config: Optional[AnalyzerConfig] = None):
+        self.config = config or AnalyzerConfig()
+        self.dependencies: Dict[str, Set[str]] = {}
+        self.globals: Dict[str, Set[str]] = {}
+        self.function_calls: Dict[str, Set[str]] = {}
+        self.class_hierarchy: Dict[str, List[str]] = {}
+        self.variable_usages: Dict[str, Set[str]] = {}  # 存储变量使用位置
+
+    def _analyze_dependencies(self, content: str, file_path: str) -> None:
+        """分析文件的导入依赖关系"""
+        tree = ast.parse(content)
+        
+        class ImportVisitor(ast.NodeVisitor):
+            def __init__(self, analyzer, file_path):
+                self.analyzer = analyzer
+                self.file_path = file_path
+                self.aliases = {}  # 记录导入别名
+                
+            def visit_Import(self, node):
+                for name in node.names:
+                    self.analyzer.dependencies.setdefault(self.file_path, set()).add(name.name)
+                    if name.asname:
+                        self.aliases[name.asname] = name.name
+                        
+            def visit_ImportFrom(self, node):
+                module = node.module if node.module else ''
+                for name in node.names:
+                    full_name = f"{module}.{name.name}" if module else name.name
+                    self.analyzer.dependencies.setdefault(self.file_path, set()).add(full_name)
+                    if name.asname:
+                        self.aliases[name.asname] = full_name
+                        
+            def visit_Name(self, node):
+                # 检查是否使用了导入的别名
+                if node.id in self.aliases:
+                    self.analyzer.dependencies.setdefault(self.file_path, set()).add(self.aliases[node.id])
+                self.generic_visit(node)
+        
+        visitor = ImportVisitor(self, file_path)
+        visitor.visit(tree)
+
+    def _analyze_globals(self, content: str, file_path: str) -> None:
+        """分析全局变量"""
+        tree = ast.parse(content)
+        
+        class GlobalVisitor(ast.NodeVisitor):
+            def __init__(self, analyzer, file_path):
+                self.analyzer = analyzer
+                self.file_path = file_path
+                self.current_scope = None
+                
+            def visit_Module(self, node):
+                old_scope = self.current_scope
+                self.current_scope = 'module'
+                self.generic_visit(node)
+                self.current_scope = old_scope
+                
+            def visit_Global(self, node):
+                for name in node.names:
+                    self.analyzer.globals.setdefault(self.file_path, set()).add(name)
+                    
+            def visit_Assign(self, node):
+                if self.current_scope == 'module' and isinstance(node.targets[0], ast.Name):
+                    self.analyzer.globals.setdefault(self.file_path, set()).add(node.targets[0].id)
+                self.generic_visit(node)
+        
+        visitor = GlobalVisitor(self, file_path)
+        visitor.visit(tree)
+
+    def _analyze_function_calls(self, content: str, file_path: str) -> None:
+        """分析函数调用关系"""
+        tree = ast.parse(content)
+        
+        class FunctionCallVisitor(ast.NodeVisitor):
+            def __init__(self, analyzer, file_path):
+                self.analyzer = analyzer
+                self.file_path = file_path
+                self.current_function = None
+                self.current_class = None
+                
+            def visit_ClassDef(self, node):
+                old_class = self.current_class
+                self.current_class = node.name
+                self.generic_visit(node)
+                self.current_class = old_class
+                
+            def visit_FunctionDef(self, node):
+                old_function = self.current_function
+                if self.current_class:
+                    self.current_function = f"{self.current_class}.{node.name}"
+                else:
+                    self.current_function = node.name
+                self.generic_visit(node)
+                self.current_function = old_function
+                
+            def visit_Call(self, node):
+                if not self.current_function:
+                    return
+                
+                caller = f"{self.file_path}:{self.current_function}"
+                
+                if isinstance(node.func, ast.Name):
+                    callee = node.func.id
+                elif isinstance(node.func, ast.Attribute):
+                    # 处理方法调用
+                    if isinstance(node.func.value, ast.Name):
+                        callee = f"{node.func.value.id}.{node.func.attr}"
+                    else:
+                        callee = node.func.attr
+                else:
+                    return
+                    
+                self.analyzer.function_calls.setdefault(caller, set()).add(callee)
+                self.generic_visit(node)
+        
+        visitor = FunctionCallVisitor(self, file_path)
+        visitor.visit(tree)
+
+    def _analyze_class_hierarchy(self, content: str, file_path: str) -> None:
+        """分析类继承关系"""
+        tree = ast.parse(content)
+        
+        class ClassVisitor(ast.NodeVisitor):
+            def __init__(self, analyzer, file_path):
+                self.analyzer = analyzer
+                self.file_path = file_path
+                self.current_module = None
+                
+            def visit_Module(self, node):
+                for imp in node.body:
+                    if isinstance(imp, ast.ImportFrom):
+                        self.current_module = imp.module
+                self.generic_visit(node)
+                
+            def visit_ClassDef(self, node):
+                class_name = f"{self.file_path}:{node.name}"
+                bases = []
+                for base in node.bases:
+                    if isinstance(base, ast.Name):
+                        bases.append(base.id)
+                    elif isinstance(base, ast.Attribute):
+                        # 处理完整的模块路径
+                        parts = []
+                        current = base
+                        while isinstance(current, ast.Attribute):
+                            parts.append(current.attr)
+                            current = current.value
+                        if isinstance(current, ast.Name):
+                            parts.append(current.id)
+                        bases.append('.'.join(reversed(parts)))
+                if bases:
+                    self.analyzer.class_hierarchy[class_name] = bases
+        
+        visitor = ClassVisitor(self, file_path)
+        visitor.visit(tree)
+
+    def _analyze_variable_usage(self, content: str, file_path: str) -> None:
+        """分析变量的使用位置"""
+        tree = ast.parse(content)
+        
+        class VariableVisitor(ast.NodeVisitor):
+            def __init__(self, analyzer, file_path):
+                self.analyzer = analyzer
+                self.file_path = file_path
+                self.current_function = None
+                self.current_class = None
+                
+            def visit_ClassDef(self, node):
+                old_class = self.current_class
+                self.current_class = node.name
+                self.generic_visit(node)
+                self.current_class = old_class
+                
+            def visit_FunctionDef(self, node):
+                old_function = self.current_function
+                scope = f"{self.current_class}.{node.name}" if self.current_class else node.name
+                self.current_function = scope
+                self.generic_visit(node)
+                self.current_function = old_function
+                
+            def visit_Name(self, node):
+                if isinstance(node.ctx, (ast.Load, ast.Store)):
+                    scope = f"{self.file_path}:{self.current_function}" if self.current_function else self.file_path
+                    self.analyzer.variable_usages.setdefault(node.id, set()).add(scope)
+                self.generic_visit(node)
+                
+            def visit_Attribute(self, node):
+                if isinstance(node.ctx, (ast.Load, ast.Store)) and isinstance(node.value, ast.Name):
+                    if node.value.id == 'self' and self.current_class:
+                        # 记录实例变量
+                        var_name = f"{self.current_class}.{node.attr}"
+                        scope = f"{self.file_path}:{self.current_function}"
+                        self.analyzer.variable_usages.setdefault(var_name, set()).add(scope)
+                self.generic_visit(node)
+        
+        visitor = VariableVisitor(self, file_path)
+        visitor.visit(tree)
+
+    def get_file_dependencies(self, file_path: str) -> set:
+        """获取指定文件的依赖"""
+        return self.dependencies.get(file_path, set())
+
+    def get_file_globals(self, file_path: str) -> set:
+        """获取指定文件的全局变量"""
+        return self.globals.get(file_path, set())
+
+    def get_function_calls(self, function_name: str) -> set:
+        """获取指定函数调用的其他函数"""
+        return self.function_calls.get(function_name, set())
+
+    def get_class_bases(self, class_name: str) -> list:
+        """获取指定类的父类"""
+        return self.class_hierarchy.get(class_name, [])
+
+    def get_variable_usages(self, variable_name: str) -> set:
+        """获取变量的所有使用位置"""
+        return self.variable_usages.get(variable_name, set())
+
+    def analyze_file(self, content: str, file_path: Union[str, Path]) -> None:
+        """分析单个文件的所有关系
+        
+        Args:
+            content (str): 文件内容
+            file_path (Union[str, Path]): 文件路径
+            
+        Raises:
+            SyntaxError: 当文件包含语法错误时
+            Exception: 其他分析错误
+        """
+        if isinstance(file_path, Path):
+            file_path = str(file_path)
+        try:
+            # 分析文件依赖
+            self._analyze_dependencies(content, file_path)
+            
+            # 分析全局变量
+            self._analyze_globals(content, file_path)
+            
+            # 分析函数调用关系
+            self._analyze_function_calls(content, file_path)
+            
+            # 分析类继承关系
+            self._analyze_class_hierarchy(content, file_path)
+            
+            # 分析变量使用位置
+            self._analyze_variable_usage(content, file_path)
+        except SyntaxError:
+            print(f"语法错误: {file_path}")
+        except Exception as e:
+            print(f"分析错误 {file_path}: {str(e)}")
+
+    def get_file_analysis(self, file_path: str) -> dict:
+        """获取指定文件的完整分析结果"""
+        return {
+            'dependencies': self.get_file_dependencies(file_path),
+            'globals': self.get_file_globals(file_path),
+            'function_calls': {
+                caller: self.get_function_calls(caller)
+                for caller in self.function_calls
+                if caller.startswith(f"{file_path}:")
+            },
+            'class_hierarchy': {
+                class_name: self.get_class_bases(class_name)
+                for class_name in self.class_hierarchy
+                if class_name.startswith(f"{file_path}:")
+            }
+        } 
\ No newline at end of file
diff --git a/core/analyzers/__init__.py b/core/analyzers/__init__.py
new file mode 100644
index 0000000..b164872
--- /dev/null
+++ b/core/analyzers/__init__.py
@@ -0,0 +1,3 @@
+from .context_analyzer import ContextAnalyzer
+
+__all__ = ['ContextAnalyzer'] 
\ No newline at end of file
diff --git a/core/analyzers/context_analyzer.py b/core/analyzers/context_analyzer.py
index 2660b7d..dc76892 100644
--- a/core/analyzers/context_analyzer.py
+++ b/core/analyzers/context_analyzer.py
@@ -1,47 +1,230 @@
-class ContextAnalyzer:
-    def __init__(self):
-        self.file_dependencies = {}
-        self.global_variables = {}
-        self.function_calls = {}
-        self.class_hierarchy = {}
-        
-    def analyze_project_context(self, files):
-        """分析项目整体上下文"""
-        for file_path in files:
-            self._analyze_file_context(file_path)
-            
-    def _analyze_file_context(self, file_path):
-        """分析单个文件的上下文"""
-        with open(file_path, 'r') as f:
-            content = f.read()
-            
-        # 分析文件依赖
-        self._analyze_dependencies(content, file_path)
-        
-        # 分析全局变量
-        self._analyze_globals(content, file_path)
-        
-        # 分析函数调用关系
-        self._analyze_function_calls(content, file_path)
-        
-        # 分析类继承关系
-        self._analyze_class_hierarchy(content, file_path)
-        
-    def get_call_graph(self, function_name):
-        """获取函数调用图"""
-        call_graph = {
-            'name': function_name,
-            'calls': self.function_calls.get(function_name, []),
-            'called_by': self._find_callers(function_name)
-        }
-        return call_graph
-        
-    def get_variable_scope(self, variable_name):
-        """获取变量作用域"""
-        if variable_name in self.global_variables:
-            return {
-                'type': 'global',
-                'defined_in': self.global_variables[variable_name],
-                'used_in': self._find_variable_usage(variable_name)
-            }
-        return None 
\ No newline at end of file
+from code_analyzer import CodeAnalyzer
+from typing import Dict, Set, List, Any, Optional, Union
+from pathlib import Path
+from concurrent.futures import ThreadPoolExecutor
+import logging
+from functools import lru_cache
+from tqdm import tqdm
+import json
+from code_analyzer import AnalyzerConfig
+
+logger = logging.getLogger(__name__)
+
+class ContextAnalyzer:
+    def __init__(self, config: Optional[AnalyzerConfig] = None):
+        self.code_analyzer = CodeAnalyzer(config)
+        self._cache: Dict[str, bool] = {}  # 缓存分析结果
+        
+    def analyze_project_context(self, files: List[Union[str, Path]]) -> None:
+        """分析项目整体上下文
+        
+        Args:
+            files: 要分析的文件路径列表
+            
+        Example:
+            analyzer = ContextAnalyzer()
+            analyzer.analyze_project_context(['file1.py', 'file2.py'])
+        """
+        with ThreadPoolExecutor(max_workers=self.code_analyzer.config.max_workers) as executor:
+            list(tqdm(
+                executor.map(self._analyze_file_context, files),
+                total=len(files),
+                desc="分析项目文件"
+            ))
+            
+    def _analyze_file_context(self, file_path: Union[str, Path]) -> None:
+        """分析单个文件的上下文"""
+        try:
+            # 检查缓存
+            if file_path in self._cache:
+                return
+            
+            # 检查文件是否存在
+            if not Path(file_path).exists():
+                raise FileNotFoundError(f"文件不存在: {file_path}")
+            
+            # 检查文件是否是 Python 文件
+            if not str(file_path).endswith('.py'):
+                raise ValueError(f"不是 Python 文件: {file_path}")
+            
+            with open(file_path, 'r', encoding='utf-8') as f:
+                content = f.read()
+            
+            self.code_analyzer.analyze_file(content, file_path)
+            self._cache[file_path] = True
+        
+        except (UnicodeDecodeError, FileNotFoundError, ValueError) as e:
+            logger.error(f"分析文件失败 {file_path}: {str(e)}")
+        except Exception as e:
+            logger.exception(f"未知错误 {file_path}: {str(e)}")
+        
+    @lru_cache(maxsize=128)
+    def get_call_graph(self, function_name: str) -> Dict[str, Any]:
+        """获取函数调用图
+        
+        Args:
+            function_name: 要分析的函数名
+            
+        Returns:
+            包含函数调用关系的字典，格式为:
+            {
+                'name': 函数名,
+                'calls': 该函数调用的其他函数集合,
+                'called_by': 调用该函数的其他函数集合
+            }
+        """
+        calls = self.code_analyzer.get_function_calls(function_name)
+        called_by = set()
+        
+        # 查找调用该函数的其他函数
+        for caller, callees in self.code_analyzer.function_calls.items():
+            if function_name in callees:
+                called_by.add(caller)
+                
+        return {
+            'name': function_name,
+            'calls': calls,
+            'called_by': called_by
+        }
+        
+    @lru_cache(maxsize=128)
+    def get_variable_scope(self, variable_name: str) -> Optional[Dict[str, Any]]:
+        """获取变量作用域"""
+        # 在所有文件中查找该变量的定义
+        defined_in = set()
+        for file_path, globals_set in self.code_analyzer.globals.items():
+            if variable_name in globals_set:
+                defined_in.add(file_path)
+        
+        if defined_in:
+            # 获取变量的使用信息
+            usage_info = self._find_variable_usage(variable_name)
+            return {
+                'type': 'global',
+                'defined_in': list(defined_in),
+                'used_in': usage_info
+            }
+        return None
+
+    def _find_variable_usage(self, variable_name: str) -> Dict[str, Any]:
+        """查找变量的使用位置"""
+        usages = self.code_analyzer.get_variable_usages(variable_name)
+        
+        # 将使用位置按文件分组
+        usage_by_file = {}
+        for usage in usages:
+            if ':' in usage:
+                file_path, function_name = usage.split(':', 1)
+                usage_by_file.setdefault(file_path, set()).add(function_name)
+            else:
+                # 模块级别的使用
+                usage_by_file.setdefault(usage, set()).add('module_level')
+        
+        return {
+            'files': list(usage_by_file.keys()),
+            'details': {
+                file_path: {
+                    'module_level': 'module_level' in functions,
+                    'functions': [f for f in functions if f != 'module_level']
+                }
+                for file_path, functions in usage_by_file.items()
+            }
+        }
+
+    def get_file_context(self, file_path: str) -> dict:
+        """获取文件的完整上下文信息"""
+        return {
+            'code_analysis': self.code_analyzer.get_file_analysis(file_path)
+        }
+
+    def get_project_analysis(self) -> dict:
+        """获取项目整体分析结果"""
+        return {
+            'all_dependencies': self.code_analyzer.dependencies,
+            'all_globals': self.code_analyzer.globals,
+            'function_call_graph': self.code_analyzer.function_calls,
+            'class_hierarchy_graph': self.code_analyzer.class_hierarchy,
+            'variable_usage_map': self.code_analyzer.variable_usages
+        }
+
+    def clear_cache(self):
+        """清除缓存"""
+        self._cache.clear()
+
+    def validate_analysis(self) -> List[str]:
+        """验证分析结果的完整性和一致性
+        
+        Returns:
+            发现的问题列表
+        """
+        issues = []
+        
+        # 检查函数调用的一致性
+        for caller, callees in self.code_analyzer.function_calls.items():
+            if ':' not in caller:
+                issues.append(f"无效的调用者格式: {caller}")
+            
+        # 检查类继承的有效性
+        for class_name, bases in self.code_analyzer.class_hierarchy.items():
+            if ':' not in class_name:
+                issues.append(f"无效的类名格式: {class_name}")
+            
+        # 检查变量使用的有效性
+        for var_name, usages in self.code_analyzer.variable_usages.items():
+            for usage in usages:
+                if ':' not in usage and not usage.endswith('.py'):
+                    issues.append(f"无效的变量使用位置: {usage}")
+                
+        return issues 
+
+    def clear_analysis(self) -> None:
+        """清理所有分析结果"""
+        self._cache.clear()
+        self.code_analyzer.dependencies.clear()
+        self.code_analyzer.globals.clear()
+        self.code_analyzer.function_calls.clear()
+        self.code_analyzer.class_hierarchy.clear()
+        self.code_analyzer.variable_usages.clear()
+
+    def save_analysis(self, output_path: Union[str, Path]) -> None:
+        """保存分析结果到文件"""
+        result = {
+            'dependencies': {k: list(v) for k, v in self.code_analyzer.dependencies.items()},
+            'globals': {k: list(v) for k, v in self.code_analyzer.globals.items()},
+            'function_calls': {k: list(v) for k, v in self.code_analyzer.function_calls.items()},
+            'class_hierarchy': self.code_analyzer.class_hierarchy,
+            'variable_usages': {k: list(v) for k, v in self.code_analyzer.variable_usages.items()}
+        }
+        
+        with open(output_path, 'w', encoding='utf-8') as f:
+            json.dump(result, f, indent=2)
+            
+    def load_analysis(self, input_path: Union[str, Path]) -> None:
+        """从文件加载分析结果"""
+        with open(input_path, 'r', encoding='utf-8') as f:
+            data = json.load(f)
+            
+        self.code_analyzer.dependencies = {k: set(v) for k, v in data['dependencies'].items()}
+        self.code_analyzer.globals = {k: set(v) for k, v in data['globals'].items()}
+        self.code_analyzer.function_calls = {k: set(v) for k, v in data['function_calls'].items()}
+        self.code_analyzer.class_hierarchy = data['class_hierarchy']
+        self.code_analyzer.variable_usages = {k: set(v) for k, v in data['variable_usages'].items()} 
+
+    def get_analysis_stats(self) -> Dict[str, Any]:
+        """获取分析结果的统计信息"""
+        return {
+            'total_files': len(self.code_analyzer.dependencies),
+            'total_functions': len({
+                func.split(':')[1] 
+                for func in self.code_analyzer.function_calls.keys()
+            }),
+            'total_classes': len(self.code_analyzer.class_hierarchy),
+            'total_globals': sum(len(vars) for vars in self.code_analyzer.globals.values()),
+            'dependencies_stats': {
+                'total': sum(len(deps) for deps in self.code_analyzer.dependencies.values()),
+                'by_file': {
+                    file: len(deps) 
+                    for file, deps in self.code_analyzer.dependencies.items()
+                }
+            }
+        } 
\ No newline at end of file
diff --git a/examples/basic_usage.py b/examples/basic_usage.py
new file mode 100644
index 0000000..6b1b168
--- /dev/null
+++ b/examples/basic_usage.py
@@ -0,0 +1,24 @@
+from core.analyzers.context_analyzer import ContextAnalyzer
+from code_analyzer import AnalyzerConfig
+
+def analyze_single_file():
+    """单文件分析示例"""
+    config = AnalyzerConfig()
+    analyzer = ContextAnalyzer(config)
+    
+    # 分析单个文件
+    analyzer.analyze_project_context(['example.py'])
+    
+    # 获取分析结果
+    context = analyzer.get_file_context('example.py')
+    print("文件分析结果:", context)
+    
+    # 获取函数调用图
+    call_graph = analyzer.get_call_graph('main')
+    print("函数调用图:", call_graph)
+    
+    # 清理
+    analyzer.clear_analysis()
+
+if __name__ == '__main__':
+    analyze_single_file() 
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
index c5f293b..2c6c7c6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,10 +1 @@
-fastapi>=0.68.0
-uvicorn>=0.15.0
-python-multipart>=0.0.5
-openai>=1.0.0
-javalang>=0.13.0
-aiohttp>=3.8.1
-python-dotenv>=0.19.0
-pydantic>=2.0.0
-pydantic-settings>=2.0.0
-php-ast>=1.1.0 
\ No newline at end of file
+tqdm>=4.65.0 
\ No newline at end of file
diff --git a/tests/test_analyzers.py b/tests/test_analyzers.py
new file mode 100644
index 0000000..0448edc
--- /dev/null
+++ b/tests/test_analyzers.py
@@ -0,0 +1,20 @@
+import unittest
+from pathlib import Path
+from core.analyzers.context_analyzer import ContextAnalyzer
+from code_analyzer import AnalyzerConfig
+
+class TestContextAnalyzer(unittest.TestCase):
+    def setUp(self):
+        self.analyzer = ContextAnalyzer(AnalyzerConfig())
+        
+    def test_analyze_file(self):
+        test_file = Path(__file__).parent / 'test_data' / 'simple.py'
+        self.analyzer.analyze_project_context([test_file])
+        context = self.analyzer.get_file_context(str(test_file))
+        self.assertIsNotNone(context)
+        
+    def tearDown(self):
+        self.analyzer.clear_analysis()
+
+if __name__ == '__main__':
+    unittest.main() 
\ No newline at end of file