diff --git a/packages/plugins/@nocobase/plugin-multi-app-manager/src/server/server.ts b/packages/plugins/@nocobase/plugin-multi-app-manager/src/server/server.ts
index 1d7fe8ea2a..92bd30c860 100644
--- a/packages/plugins/@nocobase/plugin-multi-app-manager/src/server/server.ts
+++ b/packages/plugins/@nocobase/plugin-multi-app-manager/src/server/server.ts
@@ -173,6 +173,12 @@ export class PluginMultiAppManagerServer extends Plugin {
     });
   }
 
+  async beforeEnable() {
+    if (this.app.name !== 'main') {
+      throw new Error('@nocobase/plugin-multi-app-manager can only be enabled in the main app');
+    }
+  }
+
   async load() {
     await this.importCollections(path.resolve(__dirname, 'collections'));