diff --git a/Think/App.php b/Think/App.php
index 05b5360e..7d9197f6 100644
--- a/Think/App.php
+++ b/Think/App.php
@@ -178,7 +178,7 @@ class App {
         }
 
         // 获取模块名称
-        define('MODULE_NAME',strtolower(isset($_GET[$var_m])?$_GET[$var_m]:$config['default_module']));
+        define('MODULE_NAME',ucwords(strtolower(isset($_GET[$var_m])?$_GET[$var_m]:$config['default_module'])));
 
         // 模块初始化
         if(MODULE_NAME && is_dir(APP_PATH.MODULE_NAME)) {
diff --git a/Think/Loader.php b/Think/Loader.php
index d38d953f..a1e6b7f2 100644
--- a/Think/Loader.php
+++ b/Think/Loader.php
@@ -35,8 +35,12 @@ class Loader {
                 }
             }
             $path   =   $find?dirname($path).'/':APP_PATH;
-            $filename   =   $path.str_replace('\\','/',$class).'.php';
+            $filename   =   $path.str_replace('\\','/',$class).EXT;
             if(is_file($filename)) {
+                // Win环境下面严格区分大小写
+                if (IS_WIN && !strstr(str_replace('/','\\',realpath($filename)),$class.EXT,true)){
+                    return ;
+                }
                 include $filename;
             }
         }
@@ -71,7 +75,7 @@ class Loader {
      */
     static public function import($class, $baseUrl = '', $ext= EXT ) {
         static $_file = [];
-        $class = str_replace(array('.', '#'), array('/', '.'), $class);
+        $class = str_replace(['.', '#'], ['/', '.'], $class);
         if (isset($_file[$class . $baseUrl]))
             return true;
         else
@@ -82,11 +86,11 @@ class Loader {
                 //加载当前项目应用类库
                 $class   =  substr_replace($class, '', 0, strlen($class_strut[0]) + 1);
                 $baseUrl =  MODULE_PATH;
-            }elseif (in_array(strtolower($class_strut[0]), array('org','com'))) {
+            }elseif (in_array($class_strut[0], ['Org','Com'])) {
                 // org 第三方公共类库 com 企业公共类库
                 $baseUrl =  LIB_PATH;
-            }elseif('vendor' == strtolower($class_strut[0])){
-                $baseUrl =  VENDOR_PATH;
+            }elseif(in_array($class_strut[0], ['Think','Vendor','Traits'])){
+                $baseUrl =  THINK_PATH;
             }else { // 加载其他项目应用类库
                 $class   = substr_replace($class, '', 0, strlen($class_strut[0]) + 1);
                 $baseUrl = APP_PATH . $class_strut[0] .'/';
diff --git a/Think/Template.php b/Think/Template.php
index bece6f57..70bdb154 100644
--- a/Think/Template.php
+++ b/Think/Template.php
@@ -426,7 +426,7 @@ class  Template {
     protected function parseTagLib($tagLib,&$content,$hide=false) {
         $begin      =   $this->config['taglib_begin'];
         $end        =   $this->config['taglib_end'];
-        $className  =   '\\Think\\Template\\Taglib\\'.ucwords($tagLib);
+        $className  =   '\\Think\\Template\\TagLib\\'.ucwords($tagLib);
         $tLib       =   new $className;
         foreach ($tLib->getTags() as $name=>$val){
             $tags   =   [$name];
diff --git a/Think/Template/Taglib/Cx.php b/Think/Template/Taglib/Cx.php
index b8507d62..5dc74803 100644
--- a/Think/Template/Taglib/Cx.php
+++ b/Think/Template/Taglib/Cx.php
@@ -9,7 +9,7 @@
 // | Author: liu21st <liu21st@gmail.com>
 // +----------------------------------------------------------------------
 
-namespace Think\Template\Taglib;
+namespace Think\Template\TagLib;
 use Think\Template\TagLib;
 /**
  * CX标签库解析类