diff --git a/src/main/java/co/orange/ddanzi/common/error/Error.java b/src/main/java/co/orange/ddanzi/common/error/Error.java
index 5aed1206..07ecbcbf 100644
--- a/src/main/java/co/orange/ddanzi/common/error/Error.java
+++ b/src/main/java/co/orange/ddanzi/common/error/Error.java
@@ -50,6 +50,7 @@ public enum Error {
     ACCOUNT_ALREADY_EXISTS(HttpStatus.CONFLICT, "The account already exists."),
     AUTHENTICATION_ALREADY_EXISTS(HttpStatus.CONFLICT, "The identity authentication of user already exists."),
     PAYMENT_CANNOT_CHANGE(HttpStatus.CONFLICT, "The payment status cannot be changed."),
+    ORDER_STATUS_CANNOT_CHANGE(HttpStatus.CONFLICT, "The order status cannot be changed."),
 
     // 500 INTERNAL SERVER ERROR
     INTERNAL_SERVER_ERROR(HttpStatus.INTERNAL_SERVER_ERROR, "Internal Server Error"),
diff --git a/src/main/java/co/orange/ddanzi/common/exception/OrderNotFoundException.java b/src/main/java/co/orange/ddanzi/common/exception/OrderNotFoundException.java
new file mode 100644
index 00000000..37dbfd6e
--- /dev/null
+++ b/src/main/java/co/orange/ddanzi/common/exception/OrderNotFoundException.java
@@ -0,0 +1,9 @@
+package co.orange.ddanzi.common.exception;
+
+import co.orange.ddanzi.common.error.Error;
+
+public class OrderNotFoundException extends ApiException {
+    public OrderNotFoundException() {
+        super(Error.ORDER_NOT_FOUND, Error.ORDER_NOT_FOUND.getMessage());
+    }
+}
diff --git a/src/main/java/co/orange/ddanzi/controller/OrderController.java b/src/main/java/co/orange/ddanzi/controller/OrderController.java
index 0c1bbd2b..5c0752d9 100644
--- a/src/main/java/co/orange/ddanzi/controller/OrderController.java
+++ b/src/main/java/co/orange/ddanzi/controller/OrderController.java
@@ -1,5 +1,6 @@
 package co.orange.ddanzi.controller;
 
+import co.orange.ddanzi.domain.order.enums.OrderStatus;
 import co.orange.ddanzi.dto.order.CreateOrderRequestDto;
 import co.orange.ddanzi.common.response.ApiResponse;
 import co.orange.ddanzi.service.OrderService;
@@ -21,4 +22,19 @@ ApiResponse<?> checkOrderProduct(@PathVariable("id") String id) {
     ApiResponse<?> createOrder(@RequestBody CreateOrderRequestDto requestDto){
         return orderService.createOrder(requestDto);
     }
+
+    @GetMapping("/{id}")
+    ApiResponse<?> getOrder(@PathVariable("id") String id){
+        return orderService.getOrder(id);
+    }
+
+    @PatchMapping("/{id}/buy")
+    ApiResponse<?> confirmedOrderToBuy(@PathVariable("id") String id){
+        return orderService.confirmedOrderToBuy(id);
+    }
+
+    @PatchMapping("/{id}/sale")
+    ApiResponse<?> confirmedOrderToSale(@PathVariable("id") String id){
+        return orderService.confirmedOrderToSale(id);
+    }
 }
diff --git a/src/main/java/co/orange/ddanzi/domain/order/Order.java b/src/main/java/co/orange/ddanzi/domain/order/Order.java
index 582beff9..e2246828 100644
--- a/src/main/java/co/orange/ddanzi/domain/order/Order.java
+++ b/src/main/java/co/orange/ddanzi/domain/order/Order.java
@@ -59,4 +59,8 @@ public Order(String id, OrderStatus status, LocalDateTime createdAt, LocalDateTi
         this.selectedOptionDetail = selectedOptionDetail;
 
     }
+
+    public void updateStatus(OrderStatus newStatus) {
+        this.status = newStatus;
+    }
 }
diff --git a/src/main/java/co/orange/ddanzi/dto/order/UpdateOrderResponseDto.java b/src/main/java/co/orange/ddanzi/dto/order/UpdateOrderResponseDto.java
new file mode 100644
index 00000000..bb706f94
--- /dev/null
+++ b/src/main/java/co/orange/ddanzi/dto/order/UpdateOrderResponseDto.java
@@ -0,0 +1,12 @@
+package co.orange.ddanzi.dto.order;
+
+import co.orange.ddanzi.domain.order.enums.OrderStatus;
+import lombok.Builder;
+import lombok.Getter;
+
+@Getter
+@Builder
+public class UpdateOrderResponseDto {
+    private String orderId;
+    private OrderStatus orderStatus;
+}
diff --git a/src/main/java/co/orange/ddanzi/repository/PaymentRepository.java b/src/main/java/co/orange/ddanzi/repository/PaymentRepository.java
index 3a699f4f..40d4f07c 100644
--- a/src/main/java/co/orange/ddanzi/repository/PaymentRepository.java
+++ b/src/main/java/co/orange/ddanzi/repository/PaymentRepository.java
@@ -1,7 +1,13 @@
 package co.orange.ddanzi.repository;
 
 import co.orange.ddanzi.domain.order.Payment;
+import co.orange.ddanzi.domain.product.Item;
+import co.orange.ddanzi.domain.user.User;
 import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
 
 public interface PaymentRepository extends JpaRepository<Payment, Long> {
+    @Query("SELECT p from Payment p WHERE p.buyer = :buyer and p.item = :item and p.payStatus = 'PAID'")
+    Payment findByBuyerAndItem(@Param("buyer") User buyer, @Param("item")Item item);
 }
diff --git a/src/main/java/co/orange/ddanzi/service/OrderService.java b/src/main/java/co/orange/ddanzi/service/OrderService.java
index 86838adf..88265ad9 100644
--- a/src/main/java/co/orange/ddanzi/service/OrderService.java
+++ b/src/main/java/co/orange/ddanzi/service/OrderService.java
@@ -1,11 +1,11 @@
 package co.orange.ddanzi.service;
 
 import co.orange.ddanzi.common.error.Error;
-import co.orange.ddanzi.common.exception.DiscountNotFoundException;
-import co.orange.ddanzi.common.exception.PaymentNotFoundException;
+import co.orange.ddanzi.common.exception.*;
 import co.orange.ddanzi.domain.order.Order;
 import co.orange.ddanzi.domain.order.OrderAgreement;
 import co.orange.ddanzi.domain.order.Payment;
+import co.orange.ddanzi.domain.order.enums.OrderStatus;
 import co.orange.ddanzi.domain.order.enums.PayStatus;
 import co.orange.ddanzi.domain.order.pk.OrderAgreementId;
 import co.orange.ddanzi.domain.product.Discount;
@@ -19,11 +19,10 @@
 import co.orange.ddanzi.dto.AddressInfo;
 import co.orange.ddanzi.dto.order.CheckProductResponseDto;
 import co.orange.ddanzi.dto.order.CreateOrderRequestDto;
-import co.orange.ddanzi.common.exception.ItemNotFoundException;
-import co.orange.ddanzi.common.exception.ProductNotFoundException;
 import co.orange.ddanzi.common.response.ApiResponse;
 import co.orange.ddanzi.common.response.Success;
 import co.orange.ddanzi.dto.order.OrderResponseDto;
+import co.orange.ddanzi.dto.order.UpdateOrderResponseDto;
 import co.orange.ddanzi.global.jwt.AuthUtils;
 import co.orange.ddanzi.repository.*;
 import jakarta.transaction.Transactional;
@@ -119,6 +118,48 @@ public ApiResponse<?> createOrder(CreateOrderRequestDto requestDto){
         return ApiResponse.onSuccess(Success.CREATE_ORDER_SUCCESS, setOrderResponseDto(user, order, item, payment));
     }
 
+    @Transactional
+    public ApiResponse<?> getOrder(String orderId){
+        User user = authUtils.getUser();
+        Order order = orderRepository.findById(orderId).orElseThrow(() -> new OrderNotFoundException());
+        Item item = order.getItem();
+        Payment payment = paymentRepository.findByBuyerAndItem(user, item);
+        return ApiResponse.onSuccess(Success.GET_ORDER_DETAIL_SUCCESS, setOrderResponseDto(user, order, item, payment));
+    }
+
+    @Transactional
+    public ApiResponse<?> confirmedOrderToBuy(String orderId){
+        User user = authUtils.getUser();
+        Order order = orderRepository.findById(orderId).orElseThrow(() -> new OrderNotFoundException());
+
+        if(!order.getBuyer().equals(user) || order.getStatus()!=OrderStatus.SHIPPING)
+            return ApiResponse.onFailure(Error.UNAUTHORIZED_USER,null);
+
+        order.updateStatus(OrderStatus.COMPLETED);
+
+        return ApiResponse.onSuccess(Success.GET_ORDER_DETAIL_SUCCESS, UpdateOrderResponseDto.builder()
+                .orderId(order.getId())
+                .orderStatus(order.getStatus())
+                .build());
+    }
+
+    @Transactional
+    public ApiResponse<?> confirmedOrderToSale(String orderId){
+        User user = authUtils.getUser();
+        Order order = orderRepository.findById(orderId).orElseThrow(() -> new OrderNotFoundException());
+
+        if(!order.getItem().getSeller().equals(user) || order.getStatus()!=OrderStatus.ORDER_PLACE)
+            return ApiResponse.onFailure(Error.UNAUTHORIZED_USER,null);
+
+        order.updateStatus(OrderStatus.SHIPPING);
+
+        return ApiResponse.onSuccess(Success.GET_ORDER_DETAIL_SUCCESS, UpdateOrderResponseDto.builder()
+                .orderId(order.getId())
+                .orderStatus(order.getStatus())
+                .build());
+    }
+
+
     private Order createOrderRecord(CreateOrderRequestDto requestDto, User user, Item item, OptionDetail optionDetail){
         String orderId = createOrderId(requestDto.getItemId());
         Order order = requestDto.toOrder(orderId, user, item, optionDetail);
@@ -154,4 +195,5 @@ private OrderResponseDto setOrderResponseDto(User user, Order order, Item item,
 
         return responseDto;
     }
+
 }