diff --git a/src/main/java/com/jfinal/weixin/sdk/api/AccessTokenApi.java b/src/main/java/com/jfinal/weixin/sdk/api/AccessTokenApi.java
index 542682b7ba8309dd200f0a331d965e028e1c79b1..7c417b7bf9226ba438217208b2e798ff84b499da 100644
--- a/src/main/java/com/jfinal/weixin/sdk/api/AccessTokenApi.java
+++ b/src/main/java/com/jfinal/weixin/sdk/api/AccessTokenApi.java
@@ -32,46 +32,49 @@ public class AccessTokenApi {
     private static String url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential";
 
     // 用于手动设置的 accessToken
-    private static AccessToken accessToken=null;
+    private static ThreadLocal< AccessToken>  accessTokenThreadLocal=new ThreadLocal<>();
 
     public static void setAccessToken(AccessToken ak){
-        accessToken=ak;
+        accessTokenThreadLocal.set(ak); ;
     }
 
     public static void removeAccessToken(){
-        accessToken=null;
+        accessTokenThreadLocal.remove();
     }
+
     /**
      * 从缓存中获取 access token，如果未取到或者 access token 不可用则先更新再获取
      * @return AccessToken accessToken
      */
     public static AccessToken getAccessToken() {
-        if (accessToken!=null)
-            return accessToken;
+        if (accessTokenThreadLocal.get()!=null) {
+            return accessTokenThreadLocal.get();
+        }
+
         ApiConfig ac = ApiConfigKit.getApiConfig();
-        AccessToken result = getAvailableAccessToken(ac);
-        if (result == null) {
-            synchronized(AccessTokenApi.class) {
-                result = getAvailableAccessToken(ac);
-                if (result == null) {
-                    result = refreshAccessToken(ac);
-                }
+        AccessToken ak = getAvailableAccessToken(ac);
+        if (ak == null) {
+            ak = getAvailableAccessToken(ac);
+            if (ak == null) {
+                ak = refreshAccessToken(ac);
             }
         }
-        return result;
+        accessTokenThreadLocal.set(ak);
+        return ak;
     }
 
     private static AccessToken getAvailableAccessToken(ApiConfig ac) {
         // 利用 appId 与 accessToken 建立关联，支持多账户
         IAccessTokenCache accessTokenCache = ApiConfigKit.getAccessTokenCache();
-
         String accessTokenJson = accessTokenCache.get(ac.getAppId());
         if (StrKit.notBlank(accessTokenJson)) {
             AccessToken result = new AccessToken(accessTokenJson);
+
             if (result != null && result.isAvailable()) {
                 return result;
             }
         }
+
         return null;
     }