diff --git a/go.mod b/go.mod
index 1b54bc2..c530896 100644
--- a/go.mod
+++ b/go.mod
@@ -34,6 +34,7 @@ require (
 	github.com/tencentcloud/tencentcloud-sdk-go/tencentcloud/common v1.0.385
 	github.com/tencentcloud/tencentcloud-sdk-go/tencentcloud/tms v1.0.385
 	github.com/tidwall/gjson v1.11.0
+	github.com/vmihailenco/msgpack v4.0.4+incompatible
 	github.com/x-cray/logrus-prefixed-formatter v0.5.2
 	github.com/yuin/goldmark v1.4.0
 	golang.org/x/crypto v0.0.0-20220131195533-30dcbda58838
@@ -118,7 +119,6 @@ require (
 	github.com/utahta/go-linenotify v0.5.0 // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
 	github.com/valyala/fasttemplate v1.2.1 // indirect
-	github.com/vmihailenco/msgpack v4.0.4+incompatible // indirect
 	golang.org/x/image v0.0.0-20210628002857-a66eb6448b8d // indirect
 	golang.org/x/net v0.0.0-20220127200216-cd36cc0744dd // indirect
 	golang.org/x/oauth2 v0.0.0-20211104180415-d3ed0bb246c8 // indirect
diff --git a/http/a_resp.go b/http/a_resp.go
index 6f408e2..8b9aa67 100644
--- a/http/a_resp.go
+++ b/http/a_resp.go
@@ -114,10 +114,14 @@ func GetApiPublicConfDataMap(c echo.Context) Map {
 		imgUpload = true // 管理员始终允许上传图片
 	}
 
-	frontendConf := config.Instance.Frontend
-	if frontendConf == nil {
-		frontendConf = make(map[string]interface{})
+	frontendConfSrc := config.Instance.Frontend
+	if frontendConfSrc == nil {
+		frontendConfSrc = make(map[string]interface{})
 	}
+
+	frontendConf := make(map[string]interface{})
+	CopyStruct(&frontendConfSrc, &frontendConf)
+
 	frontendConf["imgUpload"] = &imgUpload
 
 	return Map{
diff --git a/http/utils.go b/http/utils.go
index b7044bb..0532298 100644
--- a/http/utils.go
+++ b/http/utils.go
@@ -9,6 +9,7 @@ import (
 	"github.com/labstack/echo/v4"
 	"github.com/mitchellh/mapstructure"
 	"github.com/sirupsen/logrus"
+	"github.com/vmihailenco/msgpack"
 )
 
 type Map = map[string]interface{}
@@ -101,3 +102,15 @@ func CheckIsAllowed(c echo.Context, name string, email string, page model.Page,
 
 	return true, nil
 }
+
+func CopyStruct(src *map[string]interface{}, dest *map[string]interface{}) error {
+	b, err := msgpack.Marshal(src)
+	if err != nil {
+		return err
+	}
+	err = msgpack.Unmarshal(b, dest)
+	if err != nil {
+		return err
+	}
+	return nil
+}