diff --git a/pkg/common/trace_log/ctx.go b/pkg/common/trace_log/ctx.go
index 87ffed4bf..db264491e 100644
--- a/pkg/common/trace_log/ctx.go
+++ b/pkg/common/trace_log/ctx.go
@@ -4,7 +4,6 @@ import (
 	"Open_IM/pkg/common/constant"
 	"Open_IM/pkg/common/log"
 	"context"
-	"encoding/json"
 	"google.golang.org/grpc/status"
 	"strings"
 
@@ -124,9 +123,20 @@ type FuncInfo struct {
 
 type Args map[string]interface{}
 
-func (a *Args) String() string {
-	bytes, _ := json.Marshal(a)
-	return string(bytes)
+func (a Args) String() string {
+	var s string
+	var hasElement bool
+	for k, v := range a {
+		if !hasElement {
+			s += "{"
+			hasElement = true
+		}
+		s += fmt.Sprintf("%s: %v", k, v)
+	}
+	if hasElement {
+		s += "}"
+	}
+	return s
 }
 
 func SetContextInfo(ctx context.Context, funcName string, err error, args ...interface{}) {