diff --git a/src/main/resources/mappers/ProductOutMapper.xml b/src/main/resources/mappers/ProductOutMapper.xml
index a9b7abd..1e48e8e 100644
--- a/src/main/resources/mappers/ProductOutMapper.xml
+++ b/src/main/resources/mappers/ProductOutMapper.xml
@@ -37,10 +37,11 @@
 
 
     <select id="outOne" parameterType="Map" resultType="Map">
-        select o.id as id, p.name as product_name, p.kan_code, o.quantity, w.name as warehouse_name, w.id as warehouse_id, p.id as product_id, o.expected_delivery_date, o.delivery_date, o.note
+        select o.id as id, p.name as product_name, p.kan_code, o.quantity as outQuantity, s.quantity as stockQuantity, w.name as warehouse_name, w.id as warehouse_id, p.id as product_id, o.expected_delivery_date, o.delivery_date, o.note
         from product_out o
-        left join warehouse w on o.warehouse_id = w.id
         left join product p on o.product_id = p.id
+        left join warehouse w on o.warehouse_id = w.id
+        left join stock s on o.product_id = s.product_id and o.warehouse_id = s.warehouse_id
 
         where o.id = #{id}
     </select>
@@ -103,7 +104,7 @@
 
     <update id="updateWarehouseDeleteStock" parameterType="com.no1.wms.out.ProductOutDto">
         update warehouse
-        set current_capacity = current_capacity - #{quantity}
+        set current_capacity = current_capacity - #{outQuantity}
         where id = #{warehouse_id};
     </update>
 
@@ -116,13 +117,13 @@
 
     <update id="outNowUpdate" parameterType="com.no1.wms.out.ProductOutDto">
         update product_out
-        set quantity = #{quantity}, expected_delivery_date = #{expected_delivery_date}, delivery_date = #{delivery_date}
+        set quantity = #{outQuantity}, expected_delivery_date = #{expected_delivery_date}, delivery_date = #{delivery_date}
         where id = #{id};
     </update>
 
     <update id="stockQuantityUpdate" parameterType="com.no1.wms.out.ProductOutDto">
         update stock
-        set quantity = quantity - #{quantity}
+        set quantity = quantity - #{outQuantity}
         where product_id = #{product_id} and warehouse_id = #{warehouse_id};
     </update>
     <!-- update -->
diff --git a/src/main/webapp/WEB-INF/views/out/read.jsp b/src/main/webapp/WEB-INF/views/out/read.jsp
index 463cf23..f485f7f 100644
--- a/src/main/webapp/WEB-INF/views/out/read.jsp
+++ b/src/main/webapp/WEB-INF/views/out/read.jsp
@@ -37,8 +37,13 @@
                 </div>
 
                 <div class="input-group mb-3 w-40 col-centered">
-                    <span id='quantity_name' class="input-group-text">출고량</span>
-                    <input readonly id="quantity" type="text" class="form-control" placeholder="수량을 입력하세요" value="${dto.quantity}">
+                    <span id='stockQuantity_name' class="input-group-text">재고량</span>
+                    <input readonly id="stockQuantity" type="text" class="form-control" placeholder="수량을 입력하세요" value="${dto.stockQuantity}">
+                </div>
+
+                <div class="input-group mb-3 w-40 col-centered">
+                    <span id='outQuantity_name' class="input-group-text">출고량</span>
+                    <input readonly id="outQuantity" type="text" class="form-control" placeholder="수량을 입력하세요" value="${dto.outQuantity}">
                 </div>
 
                 <!--창고 관련 -->
@@ -214,7 +219,8 @@
 
         function outNowUpdate() {
             var id = $("#id").val();
-            var quantity = $("#quantity").val();
+            var stockQuantity = parseInt($("#stockQuantity").val(), 10);
+            var outQuantity = parseInt($("#outQuantity").val(), 10);
             var product_id = $("#product_id").val()
             var warehouse_id = $("#warehouse_id").val();
             var expected_delivery_date = $("#expected_delivery_date").val();
@@ -222,12 +228,17 @@
             var now = new Date();
             var delivery_date = now.toISOString().slice(0, 19).replace('T', ' ');
 
+            if (outQuantity > stockQuantity) {
+                alert("출고량이 재고량을 넘을 수 없습니다.");
+                return false;
+            }
+
             $.ajax({
                 url: "/out/outNow",
                 type: "put",
                 data: {
                     "id": id,
-                    "quantity": quantity,
+                    "outQuantity": outQuantity,
                     "product_id":product_id,
                     "warehouse_id": warehouse_id,
                     "expected_delivery_date": expected_delivery_date,
diff --git a/src/main/webapp/WEB-INF/views/out/update.jsp b/src/main/webapp/WEB-INF/views/out/update.jsp
index 0dc409d..ac4de8d 100644
--- a/src/main/webapp/WEB-INF/views/out/update.jsp
+++ b/src/main/webapp/WEB-INF/views/out/update.jsp
@@ -34,10 +34,14 @@
 
 
                 <div class="input-group mb-3 w-40 col-centered">
-                    <span id='shipment_quantity_label' class="input-group-text">출고량</span>
-                    <input id="quantity" type="text" class="form-control" placeholder="수량을 입력하세요" value="${dto.quantity}">
+                    <span id='stockQuantity_name' class="input-group-text">재고량</span>
+                    <input readonly id="stockQuantity" type="text" class="form-control" placeholder="수량을 입력하세요" value="${dto.stockQuantity}">
                 </div>
 
+                <div class="input-group mb-3 w-40 col-centered">
+                    <span id='outQuantity_name' class="input-group-text">출고량</span>
+                    <input readonly id="outQuantity" type="text" class="form-control" placeholder="수량을 입력하세요" value="${dto.outQuantity}">
+                </div>
 
 
                 <!--창고 관련 -->
@@ -103,13 +107,17 @@
         $("#updateBtn").on("click", function () {
             var id = $("#id").val();
             var product_id = $("#product_id").val();
-            var quantity = $("#quantity").val();
+            var stockQuantity = parseInt($("#stockQuantity").val(), 10);
+            var outQuantity = parseInt($("#outQuantity").val(), 10);
             var expected_delivery_date = $("#expected_delivery_date").val();
             var warehouse_id = $("#warehouse_id").val();
             var note = $("#note").val();
             var activation = $("#activation").val();
 
-
+            if (outQuantity > stockQuantity) {
+                alert("출고량이 재고량을 넘을 수 없습니다.");
+                return false;
+            }
 
             if (!product_id) {
                 alert("제품을 선택해야 합니다.");
@@ -130,7 +138,7 @@
                     "expected_delivery_date":expected_delivery_date,
                     "note":note,
                     "warehouse_id": warehouse_id,
-                    "quantity": quantity,
+                    "quantity": outQuantity,
                     "activation": activation,