diff --git a/packages/charts/package.json b/packages/charts/package.json
index 8be73c470..ad3f20d4a 100644
--- a/packages/charts/package.json
+++ b/packages/charts/package.json
@@ -23,6 +23,11 @@
     "README.md",
     "LICENSE"
   ],
+  "sideEffects": [
+    "**/*.less",
+    "**/*.css",
+    "es/index.js"
+  ],
   "scripts": {
     "build": "NODE_OPTIONS=--max_old_space_size=4096 father build"
   },
diff --git a/packages/design/package.json b/packages/design/package.json
index 9e1819587..d804d596b 100644
--- a/packages/design/package.json
+++ b/packages/design/package.json
@@ -30,6 +30,11 @@
     "README.md",
     "LICENSE"
   ],
+  "sideEffects": [
+    "**/*.less",
+    "**/*.css",
+    "es/index.js"
+  ],
   "scripts": {
     "build": "father build && cp src/style/reset.css dist/"
   },
diff --git a/packages/icons/package.json b/packages/icons/package.json
index 04c8e139d..0cb739837 100644
--- a/packages/icons/package.json
+++ b/packages/icons/package.json
@@ -30,6 +30,7 @@
     "README.md",
     "LICENSE"
   ],
+  "sideEffects": false,
   "scripts": {
     "build": "npm run generate && father build",
     "generate": "rm -rf src && ts-node scripts/generate.ts"
diff --git a/packages/ui/package.json b/packages/ui/package.json
index e1ddc2c07..aef897fc5 100644
--- a/packages/ui/package.json
+++ b/packages/ui/package.json
@@ -30,6 +30,11 @@
     "README.md",
     "LICENSE"
   ],
+  "sideEffects": [
+    "**/*.less",
+    "**/*.css",
+    "es/index.js"
+  ],
   "scripts": {
     "build": "NODE_OPTIONS=--max_old_space_size=4096 father build"
   },
diff --git a/packages/util/package.json b/packages/util/package.json
index 7e7ecabef..23deb6d2b 100644
--- a/packages/util/package.json
+++ b/packages/util/package.json
@@ -27,6 +27,7 @@
     "README.md",
     "LICENSE"
   ],
+  "sideEffects": false,
   "scripts": {
     "build": "father build"
   },