diff --git a/.changeset/cold-icons-lick.md b/.changeset/cold-icons-lick.md
new file mode 100644
index 0000000..d514352
--- /dev/null
+++ b/.changeset/cold-icons-lick.md
@@ -0,0 +1,5 @@
+---
+'rsbuild-plugin-react-router': patch
+---
+
+search for routes file with any extention
diff --git a/.changeset/social-flowers-itch.md b/.changeset/social-flowers-itch.md
new file mode 100644
index 0000000..30f70c8
--- /dev/null
+++ b/.changeset/social-flowers-itch.md
@@ -0,0 +1,5 @@
+---
+'rsbuild-plugin-react-router': patch
+---
+
+support multiple extentions for routes file, like js,ts,jsx etc
diff --git a/src/index.ts b/src/index.ts
index f2ce36a..d5e0b3d 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -97,7 +97,7 @@ export const pluginReactRouter = (
         return {} as Config;
       });
 
-    const routesPath = resolve(appDirectory, 'routes.ts');
+    const routesPath = findEntryFile(resolve(appDirectory, 'routes'));
 
     // Then read the routes
     const routeConfig = await jiti
@@ -105,8 +105,8 @@ export const pluginReactRouter = (
         default: true,
       })
       .catch(error => {
-        console.error('Failed to load routes.ts:', error);
-        console.error('No routes.ts found in app directory.');
+        console.error('Failed to load routes file:', error);
+        console.error('No routes file found in app directory.');
         return [] as RouteConfigEntry[];
       });