diff --git a/library/think/Build.php b/library/think/Build.php
index 7a531d74c786563c99da034c131eb99f2b703105..10c02effe056df0f03408ef5c4f6712e3530105c 100644
--- a/library/think/Build.php
+++ b/library/think/Build.php
@@ -91,7 +91,9 @@ class Build
         foreach ($list as $file) {
             if (!is_dir($this->basePath . dirname($file))) {
                 // 创建目录
-                mkdir($this->basePath . dirname($file), 0755, true);
+                if (!mkdir($concurrentDirectory = $this->basePath . dirname($file), 0755, true) && !is_dir($concurrentDirectory)) {
+                    throw new Exception(sprintf('Directory "%s" was not created', $concurrentDirectory));
+                }
             }
 
             if (!is_file($this->basePath . $file)) {
@@ -115,7 +117,9 @@ class Build
 
         if (!is_dir($this->basePath . $module)) {
             // 创建模块目录
-            mkdir($this->basePath . $module);
+            if (!mkdir($concurrentDirectory = $this->basePath . $module) && !is_dir($concurrentDirectory)) {
+                throw new Exception(sprintf('Directory "%s" was not created', $concurrentDirectory));
+            }
         }
 
         if (basename($this->app->getRuntimePath()) != $module) {
@@ -409,7 +413,9 @@ class Build
     protected function checkDirBuild($dirname)
     {
         if (!is_dir($dirname)) {
-            mkdir($dirname, 0755, true);
+            if (!mkdir($dirname, 0755, true) && !is_dir($dirname)) {
+                throw new Exception(sprintf('Directory "%s" was not created', $dirname));
+            }
         }
     }
 }