diff --git a/backend/app/core/auth.py b/backend/app/core/auth.py
index 2fe7a71..cc205ef 100644
--- a/backend/app/core/auth.py
+++ b/backend/app/core/auth.py
@@ -59,10 +59,14 @@ def decode_access_token(token: str) -> Optional[dict]:
 def get_current_user(
     credentials: Optional[HTTPAuthorizationCredentials] = Depends(security),
     db: Session = Depends(lambda: SessionLocal())
-) -> Optional[User]:
-    """获取当前用户（可返回None）"""
+) -> User:
+    """获取当前用户"""
     if not credentials:
-        return None
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="未登录",
+            headers={"WWW-Authenticate": "Bearer"},
+        )
     
     token = credentials.credentials
     payload = decode_access_token(token)
@@ -84,6 +88,10 @@ def get_current_user(
     
     user = db.query(User).filter(User.f99_90_id == user_id).first()
     if not user:
-        return None
+        raise HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="用户不存在",
+            headers={"WWW-Authenticate": "Bearer"},
+        )
     
     return user
diff --git a/backend/app/routers/seek.py b/backend/app/routers/seek.py
index 1ea4731..55d1967 100644
--- a/backend/app/routers/seek.py
+++ b/backend/app/routers/seek.py
@@ -142,10 +142,9 @@ def get_seek_list(
 
 @router.get("/stats")
 def get_seek_stats(
-    current_user = Depends(get_current_user),
     db: Session = Depends(get_db)
 ):
-    """获取寻配号统计"""
+    """获取寻配号统计（公开）"""
     total = db.query(SeekInfo).filter(SeekInfo.status == "active").count()
     matched = db.query(SeekInfo).filter(SeekInfo.is_matched == "true").count()
     
diff --git a/backend/app/routers/users.py b/backend/app/routers/users.py
index 1550661..f2fed77 100644
--- a/backend/app/routers/users.py
+++ b/backend/app/routers/users.py
@@ -7,7 +7,7 @@ from fastapi import APIRouter, Depends, HTTPException, status, Query, Body
 from sqlalchemy.orm import Session
 from app.core.database import get_db
 from app.core.auth import get_current_user
-from app.models.models import User, Collection
+from app.models.models import User, Collection, Information
 from app.schemas.schemas import UserResponse, UserUpdate
 
 router = APIRouter(prefix="/api", tags=["用户"])
diff --git a/config/CHANGELOG.md b/config/CHANGELOG.md
index e896cee..13dda93 100644
--- a/config/CHANGELOG.md
+++ b/config/CHANGELOG.md
@@ -1,5 +1,26 @@
 # 版本更新记录
 
+## v0.1.9 (2026-05-02)
+
+### 后端更新
+- **auth.py**
+  - 修复：get_current_user在未登录时返回None导致500错误，现在会返回401
+  - 修复：用户不存在时返回None导致500错误，现在返回401
+  - 修复：所有需要认证的接口现在会正确返回401
+
+- **seek.py**
+  - 修复：/api/seek/stats接口现在不需要登录（公开接口）
+
+- **users.py**
+  - 修复：添加Information模型导入
+
+### 数据库更新
+- seek_info表添加network_matched_count字段
+
+### 环境配置
+- B环境短信配置：AccessKey/SignName/TemplateCode更新
+- A环境短信配置：添加短信环境变量
+
 ## v0.1.8 (2026-05-01)
 
 ### 前端更新
diff --git a/config/VERSION.json b/config/VERSION.json
index ce1437f..ea74133 100644
--- a/config/VERSION.json
+++ b/config/VERSION.json
@@ -1,6 +1,6 @@
 {
-  "version": "0.1.8",
-  "updated": "2026-05-01",
+  "version": "0.1.9",
+  "updated": "2026-05-02",
   "modules": {
     "frontend": {
       "version": "0.1.8",
@@ -12,7 +12,7 @@
       }
     },
     "backend": {
-      "version": "0.1.8",
+      "version": "0.1.9",
       "routers": {
         "purchase": "0.2.0"
       },