diff --git a/base.php b/base.php
index 41afa489..1184dc51 100644
--- a/base.php
+++ b/base.php
@@ -19,7 +19,7 @@ define('LIB_PATH', THINK_PATH . 'library' . DS);
 define('CORE_PATH', LIB_PATH . 'think' . DS);
 define('TRAIT_PATH', LIB_PATH . 'traits' . DS);
 defined('APP_PATH') or define('APP_PATH', dirname($_SERVER['SCRIPT_FILENAME']) . DS);
-defined('ROOT_PATH') or define('ROOT_PATH', dirname(APP_PATH) . DS);
+defined('ROOT_PATH') or define('ROOT_PATH', dirname(realpath(APP_PATH)) . DS);
 defined('EXTEND_PATH') or define('EXTEND_PATH', ROOT_PATH . 'extend' . DS);
 defined('VENDOR_PATH') or define('VENDOR_PATH', ROOT_PATH . 'vendor' . DS);
 defined('RUNTIME_PATH') or define('RUNTIME_PATH', ROOT_PATH . 'runtime' . DS);