diff --git a/src/main/java/com/campustable/be/domain/cart/dto/CartResponse.java b/src/main/java/com/campustable/be/domain/cart/dto/CartResponse.java
index ac677b3..1a54d85 100644
--- a/src/main/java/com/campustable/be/domain/cart/dto/CartResponse.java
+++ b/src/main/java/com/campustable/be/domain/cart/dto/CartResponse.java
@@ -10,6 +10,7 @@
 @Builder
 public class CartResponse {
   private List<CartItemDto> items;
+  private int totalQuantity;
   private int totalPrice;
   private Long cartId;
 }
diff --git a/src/main/java/com/campustable/be/domain/cart/service/CartService.java b/src/main/java/com/campustable/be/domain/cart/service/CartService.java
index 47a6503..74190b5 100644
--- a/src/main/java/com/campustable/be/domain/cart/service/CartService.java
+++ b/src/main/java/com/campustable/be/domain/cart/service/CartService.java
@@ -85,9 +85,14 @@ public CartResponse updateCartItem(Long menuId, int quantity) {
         .mapToInt(item->item.getPrice() * item.getQuantity())
         .sum();
 
+    int totalQuantity = cartItems.stream()
+      .mapToInt(CartItemDto::getQuantity)
+      .sum();
+
     return CartResponse.builder().
         items(cartItems)
         .totalPrice(totalPrice)
+        .totalQuantity(totalQuantity)
         .cartId(cart.getCartId())
         .build();
   }
@@ -151,9 +156,14 @@ public CartResponse getCart(){
           .mapToInt(item->item.getPrice() * item.getQuantity())
           .sum();
 
+      int totalQuantity = cartItems.stream()
+        .mapToInt(CartItemDto::getQuantity)
+        .sum();
+
       return CartResponse.builder().
           items(cartItems)
           .totalPrice(totalPrice)
+          .totalQuantity(totalQuantity)
           .cartId(cart.get().getCartId())
           .build();
     }