diff --git a/package.json b/package.json
index 0ba918eb..c7444d14 100644
--- a/package.json
+++ b/package.json
@@ -32,14 +32,18 @@
         "@types/uuid": "^8.3.0",
         "@types/wechat-miniprogram": "^3.4.1",
         "assert": "^2.0.0",
+        "copyfiles": "^2.4.1",
         "cross-env": "^7.0.2",
         "fs-extra": "^10.0.0",
         "mocha": "^8.2.1",
+        "rimraf": "^3.0.2",
         "ts-node": "^10.8.1",
         "typescript": "^4.7.3"
     },
     "scripts": {
-        "build": "tsc",
+        "clean": "rimraf lib/",
+        "copy-files": "copyfiles -u 1 src/**/*.css lib/",
+        "build": "tsc && npm run copy-files",
         "test": "ts-node ./test/test2.ts"
     },
     "main": "src/index"