diff --git a/app/admin/service/VehColorService.php b/app/admin/service/VehColorService.php
index be83fcd..7c111c8 100644
--- a/app/admin/service/VehColorService.php
+++ b/app/admin/service/VehColorService.php
@@ -48,11 +48,47 @@ class VehColorService
         );
     }
 
+    /**
+     * 生成唯一的7位颜色编码
+     * 格式：C + (O/I) + 5位字母数字组合
+     * 
+     * @param int $type 类型：2=I，其他=O
+     * @return string 7位唯一编码
+     */
+    public function generateUniqueColorCode($type)
+    {
+        $secondChar = $type ==2 ? 'I' : 'O';
+        $chars = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ';
+        $maxAttempts = 10; // 防止无限循环
+        
+        for ($attempt = 0; $attempt < $maxAttempts; $attempt++) {
+            // 生成后5位随机字符
+            $suffix = '';
+            for ($i = 0; $i < 5; $i++) {
+                $suffix .= $chars[rand(0, strlen($chars) - 1)];
+            }
+            
+            $colorCode = 'C' . $secondChar . $suffix;
+            
+            // 检查是否已存在
+            $existing = VehColor::where('color_code', $colorCode)->first();
+            if (!$existing) {
+                return $colorCode;
+            }
+        }
+        
+        // 如果1000次尝试后仍然重复，使用时间戳确保唯一性
+        $timestamp = substr(time(), -5);
+        return 'C' . $secondChar . $timestamp;
+    }
+
     /**
      * 添加前置处理
      */
     public function beforeServiceStore($data, Request $request)
     {
+        $type = $data['type'] ?? 0;
+        $data['color_code'] = $this->generateUniqueColorCode($type);
         $data['created_by'] = $request->user->uid;
         $data['updated_by'] = $request->user->uid;
         return $data;
diff --git a/app/admin/service/VehModificationService.php b/app/admin/service/VehModificationService.php
index 6c56d9b..038129b 100644
--- a/app/admin/service/VehModificationService.php
+++ b/app/admin/service/VehModificationService.php
@@ -80,4 +80,47 @@ class VehModificationService
 
         return $config;
     }
+
+        /**
+     * 生成唯一的7位颜色编码
+     * 格式：C + (O/I) + 5位字母数字组合
+     * 
+     * @param int $type 类型
+     * @return string 7位唯一编码
+     */
+    public function generateUniqueModificationCode($type)
+    {
+        $chars = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ';
+        $maxAttempts = 10; // 防止无限循环
+        
+        for ($attempt = 0; $attempt < $maxAttempts; $attempt++) {
+            // 生成后5位随机字符
+            $suffix = '';
+            for ($i = 0; $i < 5; $i++) {
+                $suffix .= $chars[rand(0, strlen($chars) - 1)];
+            }
+
+            $code = 'C' . $type . $suffix;
+            
+            // 检查是否已存在
+            $existing = VehModification::where('code', $code)->first();
+            if (!$existing) {
+                return $code;
+            }
+        }
+        
+        // 如果1000次尝试后仍然重复，使用时间戳确保唯一性
+        $timestamp = substr(time(), -5);
+        return 'C' . $type . $timestamp;
+    }
+
+    /**
+     * 添加前置处理
+     */
+    public function beforeServiceStore($data, Request $request)
+    {
+        $type = $data['type'] ?? 0;
+        $data['code'] = $this->generateUniqueModificationCode($type);
+        return $data;
+    }
 }
\ No newline at end of file
diff --git a/app/common/service/UploadService.php b/app/common/service/UploadService.php
index 33b9137..43684cf 100644
--- a/app/common/service/UploadService.php
+++ b/app/common/service/UploadService.php
@@ -51,8 +51,39 @@ class UploadService
 
             $sceneUrl = $scene ? ($scene . '/') : '';
             $dir = 'x_server/' . $sceneUrl . date('Ymd') . '/';
-            $uniqueName = md5($originalName . microtime(true));
-            $objectKey = $dir . $uniqueName . ($extension ? ('.' . $extension) : '');
+            // 使用传入的 original_name 命名（缺少扩展名时补上推断的扩展名），并做简单安全处理
+            $safeBaseName = preg_replace('/[\\\\\/]+/', '_', $originalName);
+            if ($extension && strtolower(pathinfo($safeBaseName, PATHINFO_EXTENSION)) !== strtolower($extension)) {
+                // 若提供的名称没有扩展名或扩展名不一致，则以推断扩展名为准
+                $safeBaseName = pathinfo($safeBaseName, PATHINFO_FILENAME) . '.' . $extension;
+            } elseif (!$extension && !pathinfo($safeBaseName, PATHINFO_EXTENSION)) {
+                // 实在没有扩展名信息时，保持原名
+            }
+
+            // 重名检测：同一目录、同名且同类型则在文件名后追加序号
+            $uploadedFilesService = new UploadedFilesService();
+            $candidateName = $safeBaseName;
+            $nameBody = pathinfo($safeBaseName, PATHINFO_FILENAME);
+            $nameExt = pathinfo($safeBaseName, PATHINFO_EXTENSION);
+            $counter = 1;
+            while (true) {
+                $candidatePath = $dir . $candidateName;
+                $existing = $uploadedFilesService->findFile(['file_path' => $candidatePath]);
+                if (!$existing) {
+                    break;
+                }
+                // 若存在同路径同名，且类型也相同，则追加序号
+                if (isset($existing->file_type) && strtolower($existing->file_type) === strtolower($mime)) {
+                    $suffix = ' (' . $counter . ')';
+                    $candidateName = $nameBody . $suffix . ($nameExt !== '' ? ('.' . $nameExt) : '');
+                    $counter++;
+                    continue;
+                }
+                // 类型不同则允许同名，结束循环
+                break;
+            }
+
+            $objectKey = $dir . $candidateName;
 
             $ossService = new OssService();
             $ossService->uploadImage($filePath, $objectKey);
diff --git a/app/common/service/UploadedFilesService.php b/app/common/service/UploadedFilesService.php
index 1e2435d..ed01db2 100644
--- a/app/common/service/UploadedFilesService.php
+++ b/app/common/service/UploadedFilesService.php
@@ -152,6 +152,22 @@ class UploadedFilesService
 
         return $file;
     }
+    /**
+     * 获取文件
+     *
+     * @param string $path
+     * @return bool|\Illuminate\Database\Eloquent\Model
+     */
+    public function findFile(array $where)
+    {
+        $file = UploadedFiles::where(['file_path' => $where['file_path']]);
+
+        if (!$file) {
+            return false;
+        }
+
+        return $file;
+    }
 
     /**
      * 删除文件