diff --git a/adapters/platforms/wechat/res/workers/ipc-worker.js b/adapters/platforms/wechat/res/workers/ipc-worker.js
index 902c1570..cdb019b8 100644
--- a/adapters/platforms/wechat/res/workers/ipc-worker.js
+++ b/adapters/platforms/wechat/res/workers/ipc-worker.js
@@ -41,7 +41,7 @@ var handlers = {};
 
 function callToMain(cmd, args) {
     const id = ++_cmdId;
-    args.unshift(id, cmd);
+    const msg = [id, cmd, args];
 
     if (typeof args[args.length - 1] === "function") {
         const callback = args.pop();
@@ -49,13 +49,13 @@ function callToMain(cmd, args) {
     }
 
     if (CC_WORKER_DEBUG) {
-        console.log("worker send call:", args);
+        console.log("worker send call:", msg);
     }
 
     if (CC_WORKER_SCHEDULER) {
-        sendScheduler.send(args);
+        sendScheduler.send(msg);
     } else {
-        worker.postMessage(args);
+        worker.postMessage(msg);
     }
 }
 
diff --git a/adapters/platforms/wechat/worker/ipc-main.js b/adapters/platforms/wechat/worker/ipc-main.js
index ca3172b6..7d7558a5 100644
--- a/adapters/platforms/wechat/worker/ipc-main.js
+++ b/adapters/platforms/wechat/worker/ipc-main.js
@@ -169,7 +169,7 @@ const ipcMain = {
             const desc = descs[key];
 
             if (typeof desc.value === "function") {
-                const cmd = ++this._cmd;
+                const cmd = --this._cmd;
                 this.handlers[cmd] = {
                     name,
                     key,
@@ -178,7 +178,7 @@ const ipcMain = {
                 };
             } else {
                 // getter/setter
-                const cmd1 = ++this._cmd;
+                const cmd1 = --this._cmd;
                 this.handlers[cmd1] = {
                     name,
                     key: "get_" + key,
@@ -187,7 +187,7 @@ const ipcMain = {
                     },
                     callback: null,
                 };
-                const cmd2 = ++this._cmd;
+                const cmd2 = --this._cmd;
                 this.handlers[cmd2] = {
                     name,
                     key: "set_" + key,
@@ -195,7 +195,7 @@ const ipcMain = {
                         obj[key] = args[0];
                     }
                 };
-                const cmd3 = ++this._cmd;
+                const cmd3 = --this._cmd;
                 this.handlers[cmd3] = {
                     name,
                     key: "write_" + key,