diff --git a/catDataMocking/src/app.ts b/catDataMocking/src/app.ts
index e9d358a..700a538 100644
--- a/catDataMocking/src/app.ts
+++ b/catDataMocking/src/app.ts
@@ -1,7 +1,7 @@
 import * as express from "express";
 import * as cors from "cors";
 
-import { CatType, Cat } from "./app.model";
+import catsRouter from "./cats/cats.route";
 
 const app: express.Express = express();
 const port: number = 8000;
@@ -17,52 +17,7 @@ app.use((req, res, next) => {
 // * json middleware
 app.use(express.json());
 
-// * C
-app.post("/cats", (req, res) => {
-  try {
-    const data = req.body;
-    Cat.push(data);
-    res.status(200).send({
-      success: true,
-      data: { data },
-    });
-  } catch (error) {}
-});
-
-// * R
-app.get("/cats", (req, res) => {
-  try {
-    const cats = Cat;
-    res.status(200).send({
-      success: true,
-      data: { cats },
-    });
-  } catch (error) {
-    res.status(400).send({
-      success: false,
-      error: error.message,
-    });
-  }
-});
-
-app.get("/cats/:id", (req, res) => {
-  try {
-    const params = req.params;
-    const cats = Cat.find((cat) => {
-      return cat.id === params.id;
-    });
-    if (!cats) throw new Error("no matched data");
-    res.status(200).send({
-      success: true,
-      data: { cats },
-    });
-  } catch (error) {
-    res.status(400).send({
-      success: false,
-      error: error.message,
-    });
-  }
-});
+app.use(catsRouter);
 
 // * 404 middleware
 app.use((req, res, next) => {
diff --git a/catDataMocking/src/app.model.ts b/catDataMocking/src/cats/cats.model.ts
similarity index 100%
rename from catDataMocking/src/app.model.ts
rename to catDataMocking/src/cats/cats.model.ts
diff --git a/catDataMocking/src/cats/cats.route.ts b/catDataMocking/src/cats/cats.route.ts
new file mode 100644
index 0000000..3e70a59
--- /dev/null
+++ b/catDataMocking/src/cats/cats.route.ts
@@ -0,0 +1,53 @@
+import { Router } from "express";
+import { CatType, Cat } from "./cats.model";
+
+const router = Router();
+
+// * C
+router.post("/cats", (req, res) => {
+  try {
+    const data = req.body;
+    Cat.push(data);
+    res.status(200).send({
+      success: true,
+      data: { data },
+    });
+  } catch (error) {}
+});
+
+// * R
+router.get("/cats", (req, res) => {
+  try {
+    const cats = Cat;
+    res.status(200).send({
+      success: true,
+      data: { cats },
+    });
+  } catch (error) {
+    res.status(400).send({
+      success: false,
+      error: error.message,
+    });
+  }
+});
+
+router.get("/cats/:id", (req, res) => {
+  try {
+    const params = req.params;
+    const cats = Cat.find((cat) => {
+      return cat.id === params.id;
+    });
+    if (!cats) throw new Error("no matched data");
+    res.status(200).send({
+      success: true,
+      data: { cats },
+    });
+  } catch (error) {
+    res.status(400).send({
+      success: false,
+      error: error.message,
+    });
+  }
+});
+
+export default router;