diff --git a/src/main/java/com/aida/buyer/module/account/controller/BuyerAccountController.java b/src/main/java/com/aida/buyer/module/account/controller/BuyerAccountController.java
index d8d49d0..d65ed67 100644
--- a/src/main/java/com/aida/buyer/module/account/controller/BuyerAccountController.java
+++ b/src/main/java/com/aida/buyer/module/account/controller/BuyerAccountController.java
@@ -1,5 +1,6 @@
 package com.aida.buyer.module.account.controller;
 
+import com.aida.buyer.common.context.UserContext;
 import com.aida.buyer.common.result.Response;
 import com.aida.buyer.module.account.dto.*;
 import com.aida.buyer.module.account.service.IBuyerAccountService;
@@ -67,4 +68,10 @@ public class BuyerAccountController {
     public Response<BindEmailVO> bindEmail(@Valid @RequestBody BindEmailDTO dto) {
         return buyerAccountService.bindEmail(dto);
     }
+
+    @PostMapping("/logout")
+    @Operation(summary = "登出：清除本地 token 并将用户加入 gateway 黑名单")
+    public Response<Boolean> logout(@RequestBody LogoutDTO dto) {
+        return buyerAccountService.logout(dto.getUserId());
+    }
 }
diff --git a/src/main/java/com/aida/buyer/module/account/dto/LogoutDTO.java b/src/main/java/com/aida/buyer/module/account/dto/LogoutDTO.java
new file mode 100644
index 0000000..f504aa6
--- /dev/null
+++ b/src/main/java/com/aida/buyer/module/account/dto/LogoutDTO.java
@@ -0,0 +1,14 @@
+package com.aida.buyer.module.account.dto;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import jakarta.validation.constraints.NotNull;
+import lombok.Data;
+
+@Data
+@Schema(description = "登出请求")
+public class LogoutDTO {
+
+    @NotNull(message = "userId is required")
+    @Schema(description = "用户ID")
+    private Long userId;
+}
diff --git a/src/main/java/com/aida/buyer/module/account/feign/GatewayFeignClient.java b/src/main/java/com/aida/buyer/module/account/feign/GatewayFeignClient.java
new file mode 100644
index 0000000..86bae96
--- /dev/null
+++ b/src/main/java/com/aida/buyer/module/account/feign/GatewayFeignClient.java
@@ -0,0 +1,20 @@
+package com.aida.buyer.module.account.feign;
+
+import com.aida.buyer.common.result.Response;
+import org.springframework.cloud.openfeign.FeignClient;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+
+/**
+ * 调用 Gateway 黑名单接口，将指定用户的 token 加入黑名单。
+ */
+@FeignClient(name = "aida-gateway", path = "/internal")
+public interface GatewayFeignClient {
+
+    /**
+     * 将用户 token 加入黑名单。
+     * Gateway 会拒绝携带该用户 token 的后续请求。
+     */
+    @PostMapping("/logout")
+    Response<Void> logout(@RequestParam("userId") Long userId);
+}
diff --git a/src/main/java/com/aida/buyer/module/account/service/IBuyerAccountService.java b/src/main/java/com/aida/buyer/module/account/service/IBuyerAccountService.java
index 58b0763..f86a732 100644
--- a/src/main/java/com/aida/buyer/module/account/service/IBuyerAccountService.java
+++ b/src/main/java/com/aida/buyer/module/account/service/IBuyerAccountService.java
@@ -21,4 +21,6 @@ public interface IBuyerAccountService {
     Response<Boolean> sendEmailChangeCode(SendEmailCodeDTO dto);
 
     Response<BindEmailVO> bindEmail(BindEmailDTO dto);
+
+    Response<Boolean> logout(Long userId);
 }
diff --git a/src/main/java/com/aida/buyer/module/account/service/impl/BuyerAccountServiceImpl.java b/src/main/java/com/aida/buyer/module/account/service/impl/BuyerAccountServiceImpl.java
index 523cac0..568e195 100644
--- a/src/main/java/com/aida/buyer/module/account/service/impl/BuyerAccountServiceImpl.java
+++ b/src/main/java/com/aida/buyer/module/account/service/impl/BuyerAccountServiceImpl.java
@@ -6,6 +6,7 @@ import com.aida.buyer.common.exception.BusinessException;
 import com.aida.buyer.model.vo.AuthPrincipalVo;
 import com.aida.buyer.module.account.entity.BuyerAccount;
 import com.aida.buyer.module.account.mapper.BuyerAccountMapper;
+import com.aida.buyer.module.account.feign.GatewayFeignClient;
 import com.aida.buyer.module.account.service.IBuyerAccountService;
 import com.aida.buyer.util.LoginCacheUtil;
 import com.aida.buyer.util.RandomsUtil;
@@ -26,6 +27,7 @@ public class BuyerAccountServiceImpl implements IBuyerAccountService {
     private final BuyerAccountMapper buyerAccountMapper;
     private final TokenGenerateUtils tokenGenerateUtils;
     private final RedisLoginUtil redisLoginUtil;
+    private final GatewayFeignClient gatewayFeignClient;
 
     @Override
     public Response<Boolean> sendCode(SendCodeDTO dto) {
@@ -274,4 +276,16 @@ public class BuyerAccountServiceImpl implements IBuyerAccountService {
 
         return Response.success(new BindEmailVO(account.getId(), newEmail));
     }
+
+    @Override
+    public Response<Boolean> logout(Long userId) {
+        redisLoginUtil.deleteLoginToken(userId);
+        try {
+            gatewayFeignClient.logout(userId);
+        } catch (Exception e) {
+            log.warn("Failed to add token to gateway blacklist, userId={}, error={}", userId, e.getMessage());
+        }
+        log.info("Buyer logged out, userId={}", userId);
+        return Response.success(Boolean.TRUE);
+    }
 }
diff --git a/src/main/java/com/aida/buyer/module/cart/dto/CartItemDTO.java b/src/main/java/com/aida/buyer/module/cart/dto/CartItemDTO.java
index d1f9174..a5d8e74 100644
--- a/src/main/java/com/aida/buyer/module/cart/dto/CartItemDTO.java
+++ b/src/main/java/com/aida/buyer/module/cart/dto/CartItemDTO.java
@@ -41,4 +41,7 @@ public class CartItemDTO implements Serializable {
 
     @Schema(description = "加入购物车时间")
     private LocalDateTime addTime;
+
+    /** 店铺名称 */
+    private String shopName;
 }
diff --git a/src/main/java/com/aida/buyer/module/cart/service/impl/CartServiceImpl.java b/src/main/java/com/aida/buyer/module/cart/service/impl/CartServiceImpl.java
index 95322f6..0ddee3b 100644
--- a/src/main/java/com/aida/buyer/module/cart/service/impl/CartServiceImpl.java
+++ b/src/main/java/com/aida/buyer/module/cart/service/impl/CartServiceImpl.java
@@ -102,6 +102,7 @@ public class CartServiceImpl implements ICartService {
                     dto.setStatus(listing.getStatus());
                     dto.setProductCategory(listing.getProductCategory());
                     dto.setAddTime(item.getAddTime());
+                    dto.setShopName(listing.getShopName());
                     return dto;
                 })
                 .toList();
diff --git a/src/main/java/com/aida/buyer/module/listing/vo/ListingMallVO.java b/src/main/java/com/aida/buyer/module/listing/vo/ListingMallVO.java
index 790d2d0..edd38de 100644
--- a/src/main/java/com/aida/buyer/module/listing/vo/ListingMallVO.java
+++ b/src/main/java/com/aida/buyer/module/listing/vo/ListingMallVO.java
@@ -29,4 +29,7 @@ public class ListingMallVO implements Serializable {
 
     /** 商品分类列表 */
     private List<String> productCategory;
+
+    /** 店铺名称 */
+    private String shopName;
 }