diff --git a/app-tree-items-edit/src/app/tree-list2/tree-list2.component.html b/app-tree-items-edit/src/app/tree-list2/tree-list2.component.html
index c87e8ab..5db37b8 100644
--- a/app-tree-items-edit/src/app/tree-list2/tree-list2.component.html
+++ b/app-tree-items-edit/src/app/tree-list2/tree-list2.component.html
@@ -31,7 +31,13 @@ <h3 class="panel-title">
             </div>
           </div>
           <div class="panel-footer">
-           <button type="button" class="btn btn-primary save-button" [disabled]="isDisabledSave" (click)="save()">
+            <button type="button" class="btn btn-info next-button" (click)="back()">
+              <span class="glyphicon glyphicon-chevron-left"></span>
+              <!-- Back -->
+              {{langJson.Back[1]}}
+            </button>
+            &nbsp;&nbsp;&nbsp;&nbsp;
+            <button type="button" class="btn btn-primary save-button" [disabled]="isDisabledSave" (click)="save()">
               <span class="glyphicon glyphicon-saved"></span>
               <!-- Save -->
               {{langJson.Save[1]}}
diff --git a/app-tree-items-edit/src/app/tree-list2/tree-list2.component.ts b/app-tree-items-edit/src/app/tree-list2/tree-list2.component.ts
index 4a7e6e6..86c495e 100644
--- a/app-tree-items-edit/src/app/tree-list2/tree-list2.component.ts
+++ b/app-tree-items-edit/src/app/tree-list2/tree-list2.component.ts
@@ -58,6 +58,7 @@ export class TreeList2Component implements OnInit {
   public langJson = {
     Index_Tree:[],
     Designate_Index: [],
+    Back: [],
     Send: [],
     Save: [],
     Quit: []
@@ -227,6 +228,14 @@ export class TreeList2Component implements OnInit {
       }
     });
   }
+  /**
+   * back button process
+   */
+  back() {
+    let origin = new URL(window.location.href).origin;
+    let redirect_uri = origin + "/workflow/activity/detail/" + $("#activity_id_text").text().trim();
+    document.location.href = redirect_uri;
+  }
   /**
    * サービスインデックス編集画面の送信ボタン
    */