diff --git a/app/build.gradle b/app/build.gradle
index 86c0d5ed6..22fa13570 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -111,7 +111,7 @@ android {
     applicationVariants.all { variant ->
         println "清空build文件夹";
         for (final def project in rootProject.getAllprojects()) {
-//            delete project.buildDir
+            delete project.buildDir
             println project.buildDir
         }
         String variantName = variant.name.capitalize()