diff --git a/packages/canyon-backend/.eslintrc.js b/packages/canyon-backend/.eslintrc.js
index 9ade1ea0..791ca93b 100755
--- a/packages/canyon-backend/.eslintrc.js
+++ b/packages/canyon-backend/.eslintrc.js
@@ -1,25 +1,25 @@
 module.exports = {
-  parser: "@typescript-eslint/parser",
-  parserOptions: {
-    project: "tsconfig.json",
-    tsconfigRootDir: __dirname,
-    sourceType: "module",
-  },
-  plugins: ["@typescript-eslint/eslint-plugin"],
-  extends: [
-    "plugin:@typescript-eslint/recommended",
-    "plugin:prettier/recommended",
-  ],
-  root: true,
-  env: {
-    node: true,
-    jest: true,
-  },
-  ignorePatterns: [".eslintrc.js"],
-  rules: {
-    "@typescript-eslint/interface-name-prefix": "off",
-    "@typescript-eslint/explicit-function-return-type": "off",
-    "@typescript-eslint/explicit-module-boundary-types": "off",
-    "@typescript-eslint/no-explicit-any": "off",
-  },
+    parser: "@typescript-eslint/parser",
+    parserOptions: {
+        project: "tsconfig.json",
+        tsconfigRootDir: __dirname,
+        sourceType: "module",
+    },
+    plugins: ["@typescript-eslint/eslint-plugin"],
+    extends: [
+        "plugin:@typescript-eslint/recommended",
+        "plugin:prettier/recommended",
+    ],
+    root: true,
+    env: {
+        node: true,
+        jest: true,
+    },
+    ignorePatterns: [".eslintrc.js"],
+    rules: {
+        "@typescript-eslint/interface-name-prefix": "off",
+        "@typescript-eslint/explicit-function-return-type": "off",
+        "@typescript-eslint/explicit-module-boundary-types": "off",
+        "@typescript-eslint/no-explicit-any": "off",
+    },
 };
diff --git a/packages/canyon-backend/src/app.module.ts b/packages/canyon-backend/src/app.module.ts
index 7faf5d7f..5fabb278 100755
--- a/packages/canyon-backend/src/app.module.ts
+++ b/packages/canyon-backend/src/app.module.ts
@@ -13,7 +13,6 @@ import { SourcecodeService } from "./sourcecode/sourcecode.service";
 import { SourcecodeModule } from "./sourcecode/sourcecode.module";
 import { join } from "path";
 import { ServeStaticModule } from "@nestjs/serve-static";
-import { PlaygroundModule } from "./playground/playground.module";
 import { CoverageModule } from "./cov/coverage.module";
 
 @Module({
@@ -26,7 +25,6 @@ import { CoverageModule } from "./cov/coverage.module";
         CoverageModule,
         CodechangeModule,
         SourcecodeModule,
-        PlaygroundModule,
         PrismaModule,
         ServeStaticModule.forRoot({
             rootPath: join(__dirname, "../../canyon-platform", "dist"),
diff --git a/packages/canyon-backend/src/filter/global-exception.filter.ts b/packages/canyon-backend/src/filter/global-exception.filter.ts
deleted file mode 100644
index ba12a888..00000000
--- a/packages/canyon-backend/src/filter/global-exception.filter.ts
+++ /dev/null
@@ -1,42 +0,0 @@
-import {
-    ExceptionFilter,
-    Catch,
-    ArgumentsHost,
-    HttpException,
-} from "@nestjs/common";
-import { Request, Response } from "express";
-import { logger } from "../logger";
-
-@Catch()
-export class GlobalExceptionFilter implements ExceptionFilter {
-    catch(exception: unknown, host: ArgumentsHost) {
-        const ctx = host.switchToHttp();
-        const request = ctx.getRequest<Request>();
-        const response = ctx.getResponse<Response>();
-        const status =
-            exception instanceof HttpException ? exception.getStatus() : 500;
-        // 1.在控制台打印错误，便于调试
-        console.error(exception);
-
-        // 2.记录日志
-        logger({
-            type: "error",
-            title: String(exception),
-            message: `exception:${String(
-                exception instanceof HttpException
-                    ? exception.getResponse()
-                    : "Internal server error",
-            )}|url:${request.url}`,
-        });
-
-        response.status(status).json({
-            statusCode: status,
-            timestamp: new Date().toISOString(),
-            path: request.url,
-            message:
-                exception instanceof HttpException
-                    ? JSON.stringify(exception.getResponse())
-                    : "Internal server error",
-        });
-    }
-}
diff --git a/packages/canyon-backend/src/playground/playground.controller.ts b/packages/canyon-backend/src/playground/playground.controller.ts
deleted file mode 100755
index 5f4b74a8..00000000
--- a/packages/canyon-backend/src/playground/playground.controller.ts
+++ /dev/null
@@ -1,9 +0,0 @@
-import { Controller } from "@nestjs/common";
-import { PrismaService } from "../prisma/prisma.service";
-
-@Controller()
-export class PlaygroundController {
-    constructor(private readonly prismaService: PrismaService) {
-        console.log("PlaygroundController created");
-    }
-}
diff --git a/packages/canyon-backend/src/playground/playground.module.ts b/packages/canyon-backend/src/playground/playground.module.ts
deleted file mode 100755
index 586ed349..00000000
--- a/packages/canyon-backend/src/playground/playground.module.ts
+++ /dev/null
@@ -1,12 +0,0 @@
-import { Module } from "@nestjs/common";
-import { PlaygroundService } from "./playground.service";
-import { PrismaModule } from "src/prisma/prisma.module";
-import { PlaygroundController } from "./playground.controller";
-
-@Module({
-    imports: [PrismaModule],
-    controllers: [PlaygroundController],
-    providers: [PlaygroundService],
-    exports: [PlaygroundService],
-})
-export class PlaygroundModule {}
diff --git a/packages/canyon-backend/src/playground/playground.service.ts b/packages/canyon-backend/src/playground/playground.service.ts
deleted file mode 100755
index a4d48a6e..00000000
--- a/packages/canyon-backend/src/playground/playground.service.ts
+++ /dev/null
@@ -1,6 +0,0 @@
-import { Injectable } from "@nestjs/common";
-import { PrismaService } from "src/prisma/prisma.service";
-@Injectable()
-export class PlaygroundService {
-    constructor(private prisma: PrismaService) {}
-}
diff --git a/packages/canyon-backend/src/role/enums/role.enum.ts b/packages/canyon-backend/src/role/enums/role.enum.ts
deleted file mode 100755
index 454d14a3..00000000
--- a/packages/canyon-backend/src/role/enums/role.enum.ts
+++ /dev/null
@@ -1,4 +0,0 @@
-export enum Role {
-    User = "user",
-    Admin = "admin",
-}
diff --git a/packages/canyon-backend/src/role/guard/roles.guard.ts b/packages/canyon-backend/src/role/guard/roles.guard.ts
deleted file mode 100755
index 473917b9..00000000
--- a/packages/canyon-backend/src/role/guard/roles.guard.ts
+++ /dev/null
@@ -1,23 +0,0 @@
-import { CanActivate, ExecutionContext, Injectable } from "@nestjs/common";
-import { Reflector } from "@nestjs/core";
-import { Role } from "../enums/role.enum";
-import { ROLES_KEY } from "../roles.decorator";
-
-@Injectable()
-export class RolesGuard implements CanActivate {
-    constructor(private reflector: Reflector) {}
-
-    canActivate(context: ExecutionContext): boolean {
-        const requiredRoles = this.reflector.getAllAndOverride<Role[]>(
-            ROLES_KEY,
-            [context.getHandler(), context.getClass()],
-        );
-        if (!requiredRoles) {
-            return true;
-        }
-        const getRequest = context.switchToHttp().getRequest();
-        return requiredRoles.some((role) =>
-            getRequest.user.roles?.includes(role),
-        );
-    }
-}
diff --git a/packages/canyon-backend/src/role/roles.decorator.ts b/packages/canyon-backend/src/role/roles.decorator.ts
deleted file mode 100755
index 457ae101..00000000
--- a/packages/canyon-backend/src/role/roles.decorator.ts
+++ /dev/null
@@ -1,5 +0,0 @@
-import { SetMetadata } from "@nestjs/common";
-import { Role } from "./enums/role.enum";
-
-export const ROLES_KEY = "roles";
-export const Roles = (...roles: Role[]) => SetMetadata(ROLES_KEY, roles);