diff --git a/Frontend/_graphManagement.html b/Frontend/_graphManagement.html
index 5b599b5..b4a8e2f 100644
--- a/Frontend/_graphManagement.html
+++ b/Frontend/_graphManagement.html
@@ -135,20 +135,35 @@
                                 <input type="text" id="inpName" name="inpName" class="form-control">
                             </div>
                         </div>
-                        <div class="col-md-6">
-                            <div class="form-group mt-3">
-                                <label class="form-label" for="mainCategory">主要類別</label>
-                                <input type="text" id="mainCategory" name="mainCategory" class="form-control">
+                        <div class="dropdown col-md-6 mt-3">
+                            <label>主要類別</label>
+                            <button class="btn btn-dark dropdown-toggle col-12" type="button" id="dropdownMenuButton"
+                                data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+                                主要類別
+                            </button>
+                            <div class="dropdown-menu" aria-labelledby="dropdownMenuButton">
+                                <a class="dropdown-item" href="#">建築</a>
+                                <a class="dropdown-item" href="#">電力控制</a>
+                                <a class="dropdown-item" href="#">水力控制</a>
+                                <a class="dropdown-item" href="#">系統控制</a>
                             </div>
                         </div>
-
-                        <div class="col-md-6">
-                            <div class="form-group mt-3">
-                                <label class="form-label" for="subcategory">子類別</label>
-                                <input type="text" id="subcategory" name="subcategory" class="form-control">
+                        <div class="dropdown col-md-6 mt-3">
+                            <label>子類別</label>
+                            <button class="btn btn-dark dropdown-toggle col-12" type="button" id="dropdownMenuButton"
+                                data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
+                                子類別
+                            </button>
+                            <div class="dropdown-menu" aria-labelledby="dropdownMenuButton">
+                                <a class="dropdown-item" href="#">施工詳圖</a>
+                                <a class="dropdown-item" href="#">設備規範</a>
+                                <a class="dropdown-item" href="#">工程介面圖說</a>
+                                <a class="dropdown-item" href="#">門禁規範</a>
+                                <a class="dropdown-item" href="#">監控平面圖</a>
+                                <a class="dropdown-item" href="#">其它</a>
                             </div>
                         </div>
-                        <div class="col-md-12 mt-3">
+                        <div class="col-md-12 mt-6">
                             <label>原設計</label>
                         </div>
                         <div class="col-md-12">