diff --git a/ruoyi-ui/src/utils/imClient.js b/ruoyi-ui/src/utils/imClient.js
index cf9ba08..947ad00 100644
--- a/ruoyi-ui/src/utils/imClient.js
+++ b/ruoyi-ui/src/utils/imClient.js
@@ -29,7 +29,10 @@ class ImClient {
       if (typeof window !== 'undefined' && typeof window.commonEventFunc !== 'function') {
         window.commonEventFunc = function () {}
       }
-      this.sdk = getSDK({ coreWasmPath: '/openIM.wasm', debug: false })
+      // 用 BASE_URL 拼路径，部署到子目录时也能正确解析；线上 nginx 必须给 .wasm 配 application/wasm MIME
+      const base = (typeof process !== 'undefined' && process.env && process.env.BASE_URL) || '/'
+      const wasmUrl = base.replace(/\/?$/, '/') + 'openIM.wasm'
+      this.sdk = getSDK({ coreWasmPath: wasmUrl, debug: false })
       this._wireEvents()
     }