diff --git a/ruoyi-ui/src/utils/imClient.js b/ruoyi-ui/src/utils/imClient.js
index 65715be..cf9ba08 100644
--- a/ruoyi-ui/src/utils/imClient.js
+++ b/ruoyi-ui/src/utils/imClient.js
@@ -24,6 +24,11 @@ class ImClient {
     if (this.loginPromise) return this.loginPromise
 
     if (!this.sdk) {
+      // 兜底：某些时机下 wasm 会先调 window.commonEventFunc 再被 SDK 覆盖，
+      // 提前挂一个空 stub 避免 "window.commonEventFunc is not a function"
+      if (typeof window !== 'undefined' && typeof window.commonEventFunc !== 'function') {
+        window.commonEventFunc = function () {}
+      }
       this.sdk = getSDK({ coreWasmPath: '/openIM.wasm', debug: false })
       this._wireEvents()
     }