diff --git a/cmd/cmd.go b/cmd/cmd.go
index c4d4109..b29b86e 100644
--- a/cmd/cmd.go
+++ b/cmd/cmd.go
@@ -50,7 +50,7 @@ func Spray() {
 	}
 
 	if option.Format != "" {
-		internal.Format(option.Format)
+		internal.Format(option.Format, !option.NoColor)
 		os.Exit(0)
 	}
 
diff --git a/internal/format.go b/internal/format.go
index 12fbab9..40b1d3b 100644
--- a/internal/format.go
+++ b/internal/format.go
@@ -6,10 +6,18 @@ import (
 	"github.com/chainreactors/logs"
 	"github.com/chainreactors/spray/pkg"
 	"io/ioutil"
+	"os"
 )
 
-func Format(filename string) {
-	content, err := ioutil.ReadFile(filename)
+func Format(filename string, color bool) {
+	var content []byte
+	var err error
+	if filename == "stdin" {
+		content, err = ioutil.ReadAll(os.Stdin)
+	} else {
+		content, err = ioutil.ReadFile(filename)
+	}
+
 	if err != nil {
 		return
 	}
@@ -24,6 +32,10 @@ func Format(filename string) {
 		results = append(results, &result)
 	}
 	for _, result := range results {
-		logs.Log.Info(result.String())
+		if color {
+			logs.Log.Info(result.ColorString())
+		} else {
+			logs.Log.Info(result.String())
+		}
 	}
 }