diff --git a/FrontendWebApi/ApiControllers/FileController.cs b/FrontendWebApi/ApiControllers/FileController.cs
new file mode 100644
index 0000000..849fe7c
--- /dev/null
+++ b/FrontendWebApi/ApiControllers/FileController.cs
@@ -0,0 +1,64 @@
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+using Repository.BackendRepository.Interface;
+using Repository.FrontendRepository.Interface;
+using System;
+using System.IO;
+
+namespace FrontendWebApi.ApiControllers
+{
+    public class FileController : MyBaseApiController<GraphManageController>
+    {
+        private readonly IBackendRepository backendRepository;
+        private readonly IFrontendRepository frontendRepository;
+
+        private string graphManageFileSaveAsPath = "";
+        private string operationFileSaveAsPath = "";
+        
+
+        public FileController(IBackendRepository backendRepository, IFrontendRepository frontendRepository)
+        {
+            this.backendRepository = backendRepository;
+            this.frontendRepository = frontendRepository;
+            graphManageFileSaveAsPath = Path.Combine(Directory.GetCurrentDirectory(), "wwwroot", "upload", "graph_manage");
+            operationFileSaveAsPath = Path.Combine(Directory.GetCurrentDirectory(), "wwwroot", "upload", "operation");
+        }
+        public bool Download([FromQuery]string type , string savename, string oriname)
+        {
+            var path = "";
+            if (type == "graph")
+            {
+                path = Path.Combine(graphManageFileSaveAsPath, savename);
+            }
+            else if (type == "operation") 
+            {
+                path = Path.Combine(operationFileSaveAsPath, savename);
+            }
+
+            if (System.IO.File.Exists(path) && path != "")
+            {
+                try
+                {
+                    FileInfo xpath_file = new FileInfo(path);  //要 using System.IO;
+
+                    // 將傳入的檔名以 FileInfo 來進行解析（只以字串無法做）
+                    HttpContext.Response.Clear(); //清除buffer
+                    HttpContext.Response.ContentType = "application/octet-stream";
+                    // 檔案類型還有下列幾種"application/pdf"、"application/vnd.ms-excel"、"text/xml"、"text/HTML"、"image/JPEG"、"image/GIF"
+                    HttpContext.Response.Headers.Add("Content-Disposition", "attachment;filename=" + System.Web.HttpUtility.UrlEncode(oriname, System.Text.Encoding.UTF8));
+                    // 考慮 utf-8 檔名問題，以 out_file 設定另存的檔名
+                    HttpContext.Response.Headers.Add("Content-Length", xpath_file.Length.ToString()); //表頭加入檔案大小
+                    HttpContext.Response.SendFileAsync(xpath_file.FullName);
+
+                    return true;
+
+                }
+                catch (Exception)
+                { return false; }
+
+            }
+            else
+                return false;
+        }
+    }
+}
diff --git a/FrontendWebApi/ApiControllers/GraphManageController.cs b/FrontendWebApi/ApiControllers/GraphManageController.cs
index 693c263..9c08634 100644
--- a/FrontendWebApi/ApiControllers/GraphManageController.cs
+++ b/FrontendWebApi/ApiControllers/GraphManageController.cs
@@ -7,6 +7,7 @@ using System.Collections.Generic;
 using System.Threading.Tasks;
 using System;
 using System.Linq;
+using System.Web;
 using Repository.BackendRepository.Interface;
 using Repository.FrontendRepository.Interface;
 using System.IO;
@@ -149,7 +150,7 @@ namespace FrontendWebApi.ApiControllers
                                     WHERE gm.id = @id
                                     ORDER BY gm.priority, gm.created_at desc";
 
-                var param = new { @id = gi.id , @graph_manage_layer1 = graph_manage_layer1, @graph_manage_layer2 = graph_manage_layer2 };
+                var param = new { @id = gi.id, @graph_manage_layer1 = graph_manage_layer1, @graph_manage_layer2 = graph_manage_layer2 };
 
                 graManList = await backendRepository.GetOneAsync<GraphList>(sqlString, param);
 
@@ -218,7 +219,7 @@ namespace FrontendWebApi.ApiControllers
 
                 sWhere = @$"deleted = 0 AND id = @id";
                 gm = await backendRepository.GetOneAsync<GraphInsInfo>("graph_manage", sWhere, new { @id = gii.id });
-                
+
                 if (gm == null)
                 {
                     apiResult.Code = "0001";
@@ -232,14 +233,14 @@ namespace FrontendWebApi.ApiControllers
                 //原設計圖修改
                 var new_guid = Guid.NewGuid();
                 //刪除原本檔案
-                if (gm.oriSavName != null)
+                if (gm.oriSavName != null && gii.oriOrgName == null)
                 {
                     FolderFunction folderFunction = new FolderFunction();
                     folderFunction.DeleteFile(Path.Combine(graphManageFileSaveAsPath, gm.oriSavName));
                 }
 
                 string fileName = null;
-                if (gii.oriOrgName != null)
+                if (gii.oriOrgName != null && gii.oriFile != null)
                 {
                     fileName = new_guid + "." + gii.oriOrgName.Split('.')[1];
 
@@ -257,13 +258,13 @@ namespace FrontendWebApi.ApiControllers
                 //竣工圖修改
                 new_guid = Guid.NewGuid();
                 //刪除原本檔案
-                if (gm.donSavName != null)
+                if (gm.donSavName != null && gii.donOrgName == null)
                 {
                     var folderFunction = new FolderFunction();
                     folderFunction.DeleteFile(Path.Combine(graphManageFileSaveAsPath, gm.donSavName));
                 }
 
-                if (gii.donOrgName != null)
+                if (gii.donOrgName != null && gii.donFile != null)
                 {
                     fileName = new_guid + "." + gii.donOrgName.Split('.')[1];
 
@@ -347,7 +348,7 @@ namespace FrontendWebApi.ApiControllers
                     if (gii.donOrgName != null)
                     {
                         var new_guid = Guid.NewGuid();
-                        
+
                         var fileName = new_guid + "." + gii.donOrgName.Split('.')[1];
 
                         var fullPath = Path.Combine(graphManageFileSaveAsPath, fileName);
@@ -369,7 +370,7 @@ namespace FrontendWebApi.ApiControllers
                 graph_manage.Add("@name", gii.name);
                 graph_manage.Add("@deleted", 0);
                 graph_manage.Add("@priority", newPriority + 1);
-                graph_manage.Add("@created_by", myUser.userinfo_guid    );
+                graph_manage.Add("@created_by", myUser.userinfo_guid);
                 graph_manage.Add("@created_at", DateTime.Now);
 
                 await backendRepository.AddOneByCustomTable(graph_manage, "graph_manage");
@@ -387,5 +388,6 @@ namespace FrontendWebApi.ApiControllers
 
             return apiResult;
         }
+
     }
 }
\ No newline at end of file
diff --git a/FrontendWebApi/appsettings.json b/FrontendWebApi/appsettings.json
index 5ce7c08..af29da8 100644
--- a/FrontendWebApi/appsettings.json
+++ b/FrontendWebApi/appsettings.json
@@ -7,8 +7,8 @@
     }
   },
   "JwtSettings": {
-    "Issuer": "Admin", //�o�e��
-    "SignKey": "TaipeiDome123456", //ñ��//�̤�16�r��
+    "Issuer": "Admin", //�o�e��
+    "SignKey": "TaipeiDome123456", //ñ��//�̤�16�r��
     "JwtLifeSeconds": 1800
   },
   "DBConfig": {