diff --git a/frontend/src/features/providers/components/KeyFormDialog.vue b/frontend/src/features/providers/components/KeyFormDialog.vue
index 3c2c70c..b0e5a5b 100644
--- a/frontend/src/features/providers/components/KeyFormDialog.vue
+++ b/frontend/src/features/providers/components/KeyFormDialog.vue
@@ -349,8 +349,8 @@ const apiKeyError = computed(() => {
   }
 
   // 如果输入了值，检查长度
-  if (apiKey.length < 10) {
-    return 'API 密钥至少需要 10 个字符'
+  if (apiKey.length < 3) {
+    return 'API 密钥至少需要 3 个字符'
   }
 
   return ''
diff --git a/frontend/src/utils/errorParser.ts b/frontend/src/utils/errorParser.ts
index ad92f41..661ac42 100644
--- a/frontend/src/utils/errorParser.ts
+++ b/frontend/src/utils/errorParser.ts
@@ -54,7 +54,7 @@ const fieldNameMap: Record<string, string> = {
  */
 const errorTypeMap: Record<string, (error: ValidationError) => string> = {
   'string_too_short': (error) => {
-    const minLength = error.ctx?.min_length || 10
+    const minLength = error.ctx?.min_length || 3
     return `长度不能少于 ${minLength} 个字符`
   },
   'string_too_long': (error) => {
diff --git a/src/models/endpoint_models.py b/src/models/endpoint_models.py
index af3124c..ec6ba55 100644
--- a/src/models/endpoint_models.py
+++ b/src/models/endpoint_models.py
@@ -134,7 +134,7 @@ class EndpointAPIKeyCreate(BaseModel):
     """为 Endpoint 添加 API Key"""
 
     endpoint_id: str = Field(..., description="Endpoint ID")
-    api_key: str = Field(..., min_length=10, max_length=500, description="API Key（将自动加密）")
+    api_key: str = Field(..., min_length=3, max_length=500, description="API Key（将自动加密）")
     name: str = Field(..., min_length=1, max_length=100, description="密钥名称（必填，用于识别）")
 
     # 成本计算
@@ -175,13 +175,9 @@ class EndpointAPIKeyCreate(BaseModel):
     @classmethod
     def validate_api_key(cls, v: str) -> str:
         """验证 API Key 安全性"""
-        # 移除首尾空白
+        # 移除首尾空白（长度校验由 Field min_length 处理）
         v = v.strip()
 
-        # 检查最小长度
-        if len(v) < 10:
-            raise ValueError("API Key 长度不能少于 10 个字符")
-
         # 检查危险字符（SQL 注入防护）
         dangerous_chars = ["'", '"', ";", "--", "/*", "*/", "<", ">"]
         for char in dangerous_chars:
@@ -219,7 +215,7 @@ class EndpointAPIKeyUpdate(BaseModel):
     """更新 Endpoint API Key"""
 
     api_key: Optional[str] = Field(
-        default=None, min_length=10, max_length=500, description="API Key（将自动加密）"
+        default=None, min_length=3, max_length=500, description="API Key（将自动加密）"
     )
     name: Optional[str] = Field(default=None, min_length=1, max_length=100, description="密钥名称")
     rate_multiplier: Optional[float] = Field(default=None, ge=0.01, description="成本倍率")