diff --git a/scfs-api-core/src/main/java/com/czcb/scfs/api/core/util/Json.java b/scfs-api-core/src/main/java/com/czcb/scfs/api/core/util/Json.java
index cc5deb8..643fc5a 100644
--- a/scfs-api-core/src/main/java/com/czcb/scfs/api/core/util/Json.java
+++ b/scfs-api-core/src/main/java/com/czcb/scfs/api/core/util/Json.java
@@ -1,6 +1,7 @@
 package com.czcb.scfs.api.core.util;
 
 import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
 
 import java.nio.charset.StandardCharsets;
 
@@ -12,7 +13,7 @@ public class Json {
     private Json() {
     }
 
-    private static final Gson gson = new Gson();
+    private static final Gson gson = new GsonBuilder().setDateFormat("yyyy-MM-dd HH:mm:ss").create();
 
     public static String toJson(Object data) {
         return gson.toJson(data);