diff --git a/packages/uni-cli-shared/lib/package.js b/packages/uni-cli-shared/lib/package.js
index 3a3f90916d43d01f1817574d863ab0addf2b324a..4b717a45b7d4643e1f95376b08ac56125ceb0273 100644
--- a/packages/uni-cli-shared/lib/package.js
+++ b/packages/uni-cli-shared/lib/package.js
@@ -41,7 +41,7 @@ module.exports = {
               define[name] = false
             }
           })
-          Object.assign(scriptOptions.define, define)
+          scriptOptions.define = Object.assign({}, define, scriptOptions.define)
         }
       })
     }