diff --git a/.distignore b/.distignore
index 7ba9cb0..1e68245 100644
--- a/.distignore
+++ b/.distignore
@@ -5,3 +5,6 @@
 /sdk/composer.lock
 /sdk/vendor/aliyuncs/oss-sdk-php/samples/
 /sdk/vendor/aliyuncs/oss-sdk-php/tests/
+/sdk/vendor/aliyuncs/oss-sdk-php/.coveralls.yml
+*.github
+*.php_cs*
\ No newline at end of file
diff --git a/aliyun-oss-wordpress.php b/aliyun-oss-wordpress.php
index 21836b5..e80d4b1 100644
--- a/aliyun-oss-wordpress.php
+++ b/aliyun-oss-wordpress.php
@@ -2,8 +2,8 @@
 /*
 Plugin Name: OSS Aliyun
 Plugin URI: https://github.com/sy-records/aliyun-oss-wordpress
-Description: 使用阿里云对象存储 OSS 作为附件存储空间。（This is a plugin that uses Aliyun Object Storage Service for attachments remote saving.）
-Version: 1.4.21
+Description: 使用阿里云对象存储 OSS 作为附件存储空间。(This is a plugin that uses Aliyun Object Storage Service for attachments remote saving.)
+Version: 1.5.0
 Author: 沈唁
 Author URI: https://qq52o.me
 License: Apache2.0
@@ -18,8 +18,9 @@ use OSS\OssClient;
 use OSS\Credentials\CredentialsProvider;
 use AlibabaCloud\Credentials\Credential;
 use OSS\Credentials\StaticCredentialsProvider;
+use OSS\Core\OssException;
 
-define('OSS_VERSION', '1.4.21');
+define('OSS_VERSION', '1.5.0');
 define('OSS_BASEFOLDER', plugin_basename(dirname(__FILE__)));
 
 if (!function_exists('get_home_path')) {
@@ -58,6 +59,7 @@ function oss_get_default_options()
     return [
         'bucket' => '',
         'regional' => 'oss-cn-shanghai',
+        'origin_region' => '',
         'accessKeyId' => '',
         'accessKeySecret' => '',
         'is_internal' => 'false',
@@ -95,11 +97,31 @@ function oss_get_client()
     } else {
         $provider = new StaticCredentialsProvider(esc_attr($oss_options['accessKeyId']), esc_attr($oss_options['accessKeySecret']));
     }
+
+    $region = !empty($oss_options['origin_region']) ? esc_attr($oss_options['origin_region']) : esc_attr($oss_options['regional']);
+    if (in_array($region, ['oss-accelerate', 'oss-accelerate-overseas']) && empty($oss_options['origin_region'])) {
+        try {
+            $config = [
+                'provider'         => $provider,
+                'endpoint'         => $region == 'oss-accelerate' ? 'https://oss-cn-hangzhou.aliyuncs.com' : 'https://oss-cn-hongkong.aliyuncs.com',
+                'signatureVersion' => OssClient::OSS_SIGNATURE_VERSION_V4,
+                'region'           => $region == 'oss-accelerate' ? 'cn-hangzhou' : 'cn-hongkong',
+            ];
+            $region = (new OssClient($config))->getBucketInfo(esc_attr($oss_options['bucket']))->getLocation();
+            $oss_options['origin_region'] = sanitize_text_field($region);
+            update_option('oss_options', $oss_options);
+        } catch (OssException $e) {
+            error_log("get bucket location failed: {$e->getMessage()}");
+        }
+    }
+
+    $region = str_replace('oss-', '', $region);
+
     $config = [
         'provider'         => $provider,
         'endpoint'         => $endpoint,
         'signatureVersion' => OssClient::OSS_SIGNATURE_VERSION_V4,
-        'region'           => str_replace('oss-', '', esc_attr($oss_options['regional'])),
+        'region'           => $region,
     ];
     return new OssClient($config);
 }
@@ -118,7 +140,7 @@ function oss_get_bucket_endpoint($oss_options)
 function oss_get_bucket_name()
 {
     $oss_options = get_option('oss_options', oss_get_default_options());
-    return $oss_options['bucket'];
+    return esc_attr($oss_options['bucket']);
 }
 
 /**
@@ -766,12 +788,13 @@ function oss_setting_page()
         $options['is_internal'] = isset($_POST['is_internal']) ? 'true' : 'false';
         $options['nothumb'] = isset($_POST['nothumb']) ? 'true' : 'false';
         $options['nolocalsaving'] = isset($_POST['nolocalsaving']) ? 'true' : 'false';
-        //仅用于插件卸载时比较使用
         $options['upload_url_path'] = isset($_POST['upload_url_path']) ? sanitize_text_field(stripslashes($_POST['upload_url_path'])) : '';
         $options['style'] = isset($_POST['style']) ? sanitize_text_field($_POST['style']) : '';
         $options['update_file_name'] = isset($_POST['update_file_name']) ? sanitize_text_field($_POST['update_file_name']) : 'false';
         $options['origin_protect'] = isset($_POST['origin_protect']) ? sanitize_text_field($_POST['origin_protect']) : 'off';
 
+        $options['origin_region'] = in_array($options['regional'], ['oss-accelerate', 'oss-accelerate-overseas']) ? '' : $options['regional'];
+
         if ($options['regional'] === 'oss-rg-china-mainland' && $options['is_internal'] === 'true') {
             echo '<div class="error"><p><strong>无地域属性不支持内网，请重新填写配置！</strong></p></div>';
             $options = [];
@@ -829,14 +852,10 @@ function oss_setting_page()
 
     $oss_regional = esc_attr($oss_options['regional']);
 
-    $oss_is_internal = esc_attr($oss_options['is_internal']);
-    $oss_is_internal = $oss_is_internal == 'true';
+    $oss_is_internal = esc_attr($oss_options['is_internal']) == 'true';
+    $oss_nothumb = esc_attr($oss_options['nothumb']) == 'true';
+    $oss_nolocalsaving = esc_attr($oss_options['nolocalsaving']) == 'true';
 
-    $oss_nothumb = esc_attr($oss_options['nothumb']);
-    $oss_nothumb = $oss_nothumb == 'true';
-
-    $oss_nolocalsaving = esc_attr($oss_options['nolocalsaving']);
-    $oss_nolocalsaving = $oss_nolocalsaving == 'true';
     $oss_update_file_name = esc_attr($oss_options['update_file_name']);
     $oss_origin_protect = esc_attr($oss_options['origin_protect'] ?? 'off') !== 'off' ? 'checked="checked"' : '';
 
diff --git a/readme.txt b/readme.txt
index 8c4b261..1625d72 100644
--- a/readme.txt
+++ b/readme.txt
@@ -5,15 +5,15 @@ Tags: oss, 阿里云, 对象存储, aliyun
 Requires at least: 4.6
 Tested up to: 6.7
 Requires PHP: 7.1
-Stable tag: 1.4.21
+Stable tag: 1.5.0
 License: Apache2.0
 License URI: http://www.apache.org/licenses/LICENSE-2.0.html
 
-使用阿里云对象存储 OSS 作为附件存储空间。（This is a plugin that uses Aliyun Object Storage Service for attachments remote saving.）
+使用阿里云对象存储 OSS 作为附件存储空间。(This is a plugin that uses Aliyun Object Storage Service for attachments remote saving.)
 
 == Description ==
 
-使用阿里云对象存储 OSS 作为附件存储空间。（This is a plugin that uses Aliyun Object Storage Service for attachments remote saving.）
+使用阿里云对象存储 OSS 作为附件存储空间。(This is a plugin that uses Aliyun Object Storage Service for attachments remote saving.)
 
 - 依赖阿里云 OSS 服务：https://www.aliyun.com/product/oss
 
@@ -78,6 +78,10 @@ License URI: http://www.apache.org/licenses/LICENSE-2.0.html
 
 == Changelog ==
 
+= 1.5.0 =
+
+- Enhance region handling for OSS configuration
+
 = 1.4.21 =
 
 - Optimize uninstall code