diff --git a/src/main/java/com/back/domain/cart/controller/CartController.java b/src/main/java/com/back/domain/cart/controller/CartController.java
index 4d9a63a0..a6265e3d 100644
--- a/src/main/java/com/back/domain/cart/controller/CartController.java
+++ b/src/main/java/com/back/domain/cart/controller/CartController.java
@@ -101,6 +101,18 @@ public ResponseEntity<RsData<CartResponseDto>> toggleSelection(
         return ResponseEntity.ok(RsData.of("200", "선택 상태가 변경되었습니다.", responseDto));
     }
 
+    @PutMapping("/toggle-all-selection")
+    @Operation(summary = "장바구니 전체 선택 토글", description = "모든 장바구니 아이템의 선택 상태를 일괄 변경합니다.")
+    public ResponseEntity<RsData<List<CartResponseDto>>> toggleAllSelection(
+            @AuthenticationPrincipal CustomUserDetails customUserDetails,
+            @RequestParam boolean isSelected) {
+        
+        User user = customUserDetails.getUser();
+        List<CartResponseDto> responseDtos = cartService.toggleAllSelection(user, isSelected);
+        String message = isSelected ? "모든 장바구니 아이템이 선택되었습니다." : "모든 장바구니 아이템이 해제되었습니다.";
+        return ResponseEntity.ok(RsData.of("200", message, responseDtos));
+    }
+
     @GetMapping("/selected")
     @Operation(
         summary = "선택된 장바구니 아이템 조회", 
diff --git a/src/main/java/com/back/domain/cart/service/CartService.java b/src/main/java/com/back/domain/cart/service/CartService.java
index 25258027..e1a405d0 100644
--- a/src/main/java/com/back/domain/cart/service/CartService.java
+++ b/src/main/java/com/back/domain/cart/service/CartService.java
@@ -219,6 +219,32 @@ public CartResponseDto toggleSelection(User user, Long cartId) {
         return CartResponseDto.from(updatedCart);
     }
 
+    /**
+     * 장바구니 전체 선택 토글
+     */
+    @Transactional
+    public List<CartResponseDto> toggleAllSelection(User user, boolean isSelected) {
+        // 1. 사용자의 모든 장바구니 아이템 조회 (상품/펀딩 fetch join)
+        List<Cart> userCarts = cartRepository.findByUserWithProduct(user);
+
+        // 2. 모든 아이템의 선택 상태를 일괄 변경
+        for (Cart cart : userCarts) {
+            if (isSelected) {
+                cart.select();
+            } else {
+                cart.unselect();
+            }
+        }
+
+        // 3. 일괄 저장
+        List<Cart> updatedCarts = cartRepository.saveAll(userCarts);
+
+        // 4. 응답 DTO 변환
+        return updatedCarts.stream()
+                .map(CartResponseDto::from)
+                .collect(Collectors.toList());
+    }
+
     /**
      * 선택된 장바구니 아이템 조회
      * @param user 사용자
diff --git a/src/test/java/com/back/domain/review/controller/ReviewControllerTest.java b/src/test/java/com/back/domain/review/controller/ReviewControllerTest.java
index fbe2ff24..89de466c 100644
--- a/src/test/java/com/back/domain/review/controller/ReviewControllerTest.java
+++ b/src/test/java/com/back/domain/review/controller/ReviewControllerTest.java
@@ -256,7 +256,8 @@ void getReviewStats_Success() throws Exception {
         
         // When & Then
         mockMvc.perform(get("/api/reviews/stats")
-                        .param("productUuid", TEST_PRODUCT_UUID.toString()))
+                        .param("productUuid", TEST_PRODUCT_UUID.toString())
+                        .with(user(customUserDetails)))
                 .andExpect(status().isOk());
     }