diff --git a/DuDoong-Domain/src/main/java/band/gosrock/domain/domains/issuedTicket/adaptor/IssuedTicketAdaptor.java b/DuDoong-Domain/src/main/java/band/gosrock/domain/domains/issuedTicket/adaptor/IssuedTicketAdaptor.java
index ccdf6397..2ec2c216 100644
--- a/DuDoong-Domain/src/main/java/band/gosrock/domain/domains/issuedTicket/adaptor/IssuedTicketAdaptor.java
+++ b/DuDoong-Domain/src/main/java/band/gosrock/domain/domains/issuedTicket/adaptor/IssuedTicketAdaptor.java
@@ -75,6 +75,10 @@ public Long countPaidTicket(Long userId, Long itemId) {
         return issuedTicketRepository.countPaidTicket(userId, itemId);
     }
 
+    public Long countIssuedTicketByItemId(Long itemId) {
+        return issuedTicketRepository.countIssuedTicketByItemId(itemId);
+    }
+
     public IssuedTicket queryByIssuedTicketNo(String issuedTicketNo) {
         return issuedTicketRepository
                 .findByIssuedTicketNo(issuedTicketNo)
diff --git a/DuDoong-Domain/src/main/java/band/gosrock/domain/domains/issuedTicket/repository/IssuedTicketCustomRepository.java b/DuDoong-Domain/src/main/java/band/gosrock/domain/domains/issuedTicket/repository/IssuedTicketCustomRepository.java
index 3d269a5f..5b12812b 100644
--- a/DuDoong-Domain/src/main/java/band/gosrock/domain/domains/issuedTicket/repository/IssuedTicketCustomRepository.java
+++ b/DuDoong-Domain/src/main/java/band/gosrock/domain/domains/issuedTicket/repository/IssuedTicketCustomRepository.java
@@ -14,4 +14,6 @@ public interface IssuedTicketCustomRepository {
     Optional<IssuedTicket> find(Long issuedTicketId);
 
     Long countPaidTicket(Long userId, Long issuedTicketId);
+
+    Long countIssuedTicketByItemId(Long ticketItemId);
 }
diff --git a/DuDoong-Domain/src/main/java/band/gosrock/domain/domains/issuedTicket/repository/IssuedTicketCustomRepositoryImpl.java b/DuDoong-Domain/src/main/java/band/gosrock/domain/domains/issuedTicket/repository/IssuedTicketCustomRepositoryImpl.java
index e9d3f104..d7ea0e61 100644
--- a/DuDoong-Domain/src/main/java/band/gosrock/domain/domains/issuedTicket/repository/IssuedTicketCustomRepositoryImpl.java
+++ b/DuDoong-Domain/src/main/java/band/gosrock/domain/domains/issuedTicket/repository/IssuedTicketCustomRepositoryImpl.java
@@ -69,11 +69,20 @@ public Optional<IssuedTicket> find(Long issuedTicketId) {
     }
 
     @Override
-    public Long countPaidTicket(Long userId, Long issuedTicketId) {
+    public Long countPaidTicket(Long userId, Long ticketItemId) {
         return queryFactory
                 .select(count(issuedTicket))
                 .from(issuedTicket)
-                .where(eqUserId(userId), eqEventId(issuedTicketId), filterPaidTickets())
+                .where(eqUserId(userId), eqTicketItemId(ticketItemId), filterPaidTickets())
+                .fetchOne();
+    }
+
+    @Override
+    public Long countIssuedTicketByItemId(Long ticketItemId) {
+        return queryFactory
+                .select(count(issuedTicket))
+                .from(issuedTicket)
+                .where(eqTicketItemId(ticketItemId), filterPaidTickets())
                 .fetchOne();
     }
 
@@ -81,8 +90,8 @@ private BooleanExpression filterPaidTickets() {
         return issuedTicket.issuedTicketStatus.in(ENTRANCE_COMPLETED, ENTRANCE_INCOMPLETE);
     }
 
-    private BooleanExpression eqEventId(Long issuedTicketId) {
-        return issuedTicket.itemInfo.ticketItemId.eq(issuedTicketId);
+    private BooleanExpression eqTicketItemId(Long ticketItemId) {
+        return issuedTicket.itemInfo.ticketItemId.eq(ticketItemId);
     }
 
     private BooleanExpression eqUserId(Long userId) {
diff --git a/DuDoong-Domain/src/main/java/band/gosrock/domain/domains/order/adaptor/OrderAdaptor.java b/DuDoong-Domain/src/main/java/band/gosrock/domain/domains/order/adaptor/OrderAdaptor.java
index 9ca2444f..d84b6163 100644
--- a/DuDoong-Domain/src/main/java/band/gosrock/domain/domains/order/adaptor/OrderAdaptor.java
+++ b/DuDoong-Domain/src/main/java/band/gosrock/domain/domains/order/adaptor/OrderAdaptor.java
@@ -57,6 +57,10 @@ public Page<Order> findEventOrders(FindEventOrdersCondition condition, Pageable
         return orderRepository.findEventOrders(condition, pageable);
     }
 
+    public List<Order> findByEventIdAndOrderStatus(Long eventId, OrderStatus orderStatus) {
+        return orderRepository.findByEventIdAndOrderStatus(eventId, orderStatus);
+    }
+
     public List<Order> findByEventIdAndOrderStatusAndUserId(
             Long eventId, Long userId, OrderStatus orderStatus) {
         return orderRepository.findByEventIdAndUserIdAndOrderStatus(eventId, userId, orderStatus);
diff --git a/DuDoong-Domain/src/main/java/band/gosrock/domain/domains/order/domain/Order.java b/DuDoong-Domain/src/main/java/band/gosrock/domain/domains/order/domain/Order.java
index dfa6e18a..c3d1ceea 100644
--- a/DuDoong-Domain/src/main/java/band/gosrock/domain/domains/order/domain/Order.java
+++ b/DuDoong-Domain/src/main/java/band/gosrock/domain/domains/order/domain/Order.java
@@ -154,6 +154,7 @@ public static Order createApproveOrder(
                         .build();
         orderValidator.validCanCreate(order);
         orderValidator.validApproveStatePurchaseLimit(order);
+        orderValidator.validApproveOrderCreateTotalStock(order);
         order.calculatePaymentInfo();
         return order;
     }
diff --git a/DuDoong-Domain/src/main/java/band/gosrock/domain/domains/order/domain/validator/OrderValidator.java b/DuDoong-Domain/src/main/java/band/gosrock/domain/domains/order/domain/validator/OrderValidator.java
index 25b62c37..ea3fcd35 100644
--- a/DuDoong-Domain/src/main/java/band/gosrock/domain/domains/order/domain/validator/OrderValidator.java
+++ b/DuDoong-Domain/src/main/java/band/gosrock/domain/domains/order/domain/validator/OrderValidator.java
@@ -194,6 +194,23 @@ public void validApproveStatePurchaseLimit(Order order) {
         }
     }
 
+    public void validApproveOrderCreateTotalStock(Order order) {
+        TicketItem item = getItem(order);
+
+        List<Order> approveWaitingOrders =
+                orderAdaptor.findByEventIdAndOrderStatus(
+                        order.getEventId(), OrderStatus.PENDING_APPROVE);
+        Long approveWaitingTicketCount =
+                approveWaitingOrders.stream().map(Order::getTotalQuantity).reduce(0L, Long::sum);
+
+        Long alreadyIssuedCount = issuedTicketAdaptor.countIssuedTicketByItemId(order.getItemId());
+
+        Long expectQuantity =
+                alreadyIssuedCount + approveWaitingTicketCount + order.getTotalQuantity();
+
+        item.validEnoughQuantity(expectQuantity);
+    }
+
     /** 이벤트가 열려있는 상태인지 */
     public void validEventIsOpen(Event event) {
         event.validateNotOpenStatus();
diff --git a/DuDoong-Domain/src/main/java/band/gosrock/domain/domains/order/repository/OrderRepository.java b/DuDoong-Domain/src/main/java/band/gosrock/domain/domains/order/repository/OrderRepository.java
index a4432c52..77eb0810 100644
--- a/DuDoong-Domain/src/main/java/band/gosrock/domain/domains/order/repository/OrderRepository.java
+++ b/DuDoong-Domain/src/main/java/band/gosrock/domain/domains/order/repository/OrderRepository.java
@@ -10,6 +10,8 @@ public interface OrderRepository extends CrudRepository<Order, Long>, OrderCusto
 
     List<Order> findByEventId(Long eventId);
 
+    List<Order> findByEventIdAndOrderStatus(Long eventId, OrderStatus orderStatus);
+
     List<Order> findByEventIdAndUserIdAndOrderStatus(
             Long eventId, Long userId, OrderStatus orderStatus);
 
diff --git a/DuDoong-Domain/src/main/java/band/gosrock/domain/domains/ticket_item/exception/TicketItemErrorCode.java b/DuDoong-Domain/src/main/java/band/gosrock/domain/domains/ticket_item/exception/TicketItemErrorCode.java
index c34c0c5c..df0eb741 100644
--- a/DuDoong-Domain/src/main/java/band/gosrock/domain/domains/ticket_item/exception/TicketItemErrorCode.java
+++ b/DuDoong-Domain/src/main/java/band/gosrock/domain/domains/ticket_item/exception/TicketItemErrorCode.java
@@ -18,7 +18,10 @@ public enum TicketItemErrorCode implements BaseErrorCode {
     @ExplainError("요청에서 보내준 옵션 id 값이 올바르지 않을 때 발생하는 오류입니다.")
     OPTION_NOT_FOUND(NOT_FOUND, "Option_404_1", "옵션을 찾을 수 없습니다."),
     @ExplainError("주문 요청한 티켓 상품 재고가 부족할 때 발생하는 오류입니다.")
-    TICKET_ITEM_QUANTITY_LACK(BAD_REQUEST, "Ticket_Item_400_1", "티켓 상품 재고가 부족합니다."),
+    TICKET_ITEM_QUANTITY_LACK(
+            BAD_REQUEST,
+            "Ticket_Item_400_1",
+            "티켓 상품 재고가 부족합니다. ( 승인 대기 또는 앞선 주문으로 인해, 재고가 있어도 주문이 불가할 수 있습니다.)"),
     @ExplainError("주문 및 승인 요청 시 티켓 상품 재고보다 많은 양을 주문 시 발생하는 오류입니다.")
     TICKET_ITEM_QUANTITY_LESS_THAN_ZERO(
             BAD_REQUEST, "Ticket_Item_400_2", "티켓 아이템 재고가 0보다 작을 수 없습니다."),