diff --git a/CHANGELOG.md b/CHANGELOG.md
index e69de29..a88774d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -0,0 +1,4 @@
+# 0.0.0-experimental.1 - 12 Nov 2022
+Improvement:
+- Auto infers path params if schema is presented
+- Auto infers path params now merge with schema.params
diff --git a/example/index.ts b/example/index.ts
index b8299fa..376f395 100644
--- a/example/index.ts
+++ b/example/index.ts
@@ -1,35 +1,19 @@
 import { KingWorld, t } from 'kingworld'
-
+// ? @kingworldjs/schema
 import swagger from '../src/index'
 
 const app = new KingWorld()
-    .use(swagger, {
-        // path: '/v2/swagger',
-        // swagger: {
-        //     info: {
-        //         title: 'Hello World',
-        //         version: '0.0.0'
-        //     }
-        // }
-    })
+    .use(swagger)
     .get('/', () => 'hi')
     .get('/unpath/:id', ({ params: { id } }) => id)
-    .get('/unpath/:id/:name', ({ params: { id } }) => id)
     .post(
         '/json/:id',
         ({ body, params: { id }, query: { name } }) => ({
             ...body,
-            id,
-            name
+            id
         }),
         {
             schema: {
-                params: t.Object({
-                    id: t.String()
-                }),
-                query: t.Object({
-                    name: t.String()
-                }),
                 body: t.Object({
                     username: t.String(),
                     password: t.String()
@@ -37,12 +21,12 @@ const app = new KingWorld()
                 response: t.Object({
                     username: t.String(),
                     password: t.String(),
-                    id: t.String(),
-                    name: t.String()
+                    id: t.String()
                 })
             }
         }
     )
+    .get('/unpath/:id/:name', ({ params: { id } }) => id)
     .post('/json', ({ body }) => body, {
         schema: {
             body: t.Object({
diff --git a/package.json b/package.json
index 21f5a3e..5dbc5b5 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@kingworldjs/swagger",
-  "version": "0.0.0-experimental.0",
+  "version": "0.0.0-experimental.1",
   "description": "A plugin for kingworld that auto-generate Swagger page",
   "author": {
     "name": "saltyAom",
diff --git a/src/index.ts b/src/index.ts
index 760e8e9..e14fac0 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -38,16 +38,31 @@ const filterPaths = (
             Object.keys(value).forEach((method) => {
                 const schema = value[method]
 
-                if (key.includes('{') && !schema.parameters)
-                    schema.parameters = key
-                        .split('/')
-                        .filter((x) => x.startsWith('{'))
-                        .map((x) => ({
-                            in: 'path',
-                            name: x.slice(1, x.length - 1),
-                            type: 'string',
-                            required: true
-                        }))
+                if (key.includes('{')) {
+                    if (!schema.parameters) schema.parameters = []
+
+                    schema.parameters = [
+                        ...key
+                            .split('/')
+                            .filter(
+                                (x) =>
+                                    x.startsWith('{') &&
+                                    !schema.parameters.find(
+                                        (params: Record<string, any>) =>
+                                            params.in === 'path' &&
+                                            params.name ===
+                                                x.slice(1, x.length - 1)
+                                    )
+                            )
+                            .map((x) => ({
+                                in: 'path',
+                                name: x.slice(1, x.length - 1),
+                                type: 'string',
+                                required: true
+                            })),
+                        ...schema.parameters
+                    ]
+                }
 
                 if (!schema.responses)
                     schema.responses = {
@@ -63,7 +78,7 @@ const filterPaths = (
 
 /**
  * A plugin for [kingworld](https://github.com/saltyaom/kingworld) that auto-generate Swagger page.
- * 
+ *
  * @see https://github.com/saltyaom/kingworld-swagger
  */
 export const swagger = (