diff --git a/Controllers/Account.cs b/Controllers/Account.cs
index da000c6..436788b 100644
--- a/Controllers/Account.cs
+++ b/Controllers/Account.cs
@@ -9,7 +9,7 @@ namespace fubon_api.Controllers;
 public class FubonSdkAccountController : ControllerBase
 {
     private readonly FubonSDK _sdk;
-    private Account _account;
+    private readonly Account _account;
     private readonly ILogger<FubonSdkAccountController> _logger;
 
     public FubonSdkAccountController(ILogger<FubonSdkAccountController> logger, FubonSDK sdk, Account account)
@@ -19,18 +19,10 @@ public class FubonSdkAccountController : ControllerBase
         _logger = logger;
     }
 
-    [HttpPost("Login")]
-    public LoginResponse Login([FromBody] LoginRequest request)
+    [HttpGet("Account")]
+    public Account GetAccount()
     {
-        if (request == null)
-        {
-            throw new ArgumentException("Invalid login request.");
-        }
-
-        var result = _sdk.Login(request.Id, request.Password, "Your Cert Path", "Your Cert Password");
-        _account = result.data[0];
-
-        return result;
+        return _account;
     }
 
     [HttpGet("Inventories")]
diff --git a/Models/FubonSettings.cs b/Models/FubonSettings.cs
new file mode 100644
index 0000000..fb1c934
--- /dev/null
+++ b/Models/FubonSettings.cs
@@ -0,0 +1,9 @@
+namespace fubon_api.Models;
+
+public class FubonSettings
+{
+    public string Id { get; set; }
+    public string Password { get; set; }
+    public string CertPath { get; set; }
+    public string CertPassword{ get; set; }
+}
\ No newline at end of file
diff --git a/Program.cs b/Program.cs
index 5d949ee..c52d0d7 100644
--- a/Program.cs
+++ b/Program.cs
@@ -1,18 +1,36 @@
 using fubon_api.Controllers;
+using fubon_api.Models;
 using FubonNeo.Sdk;
 
 var builder = WebApplication.CreateBuilder(args);
 
+// appsettings
+var fubonSettings = builder.Configuration.GetSection("FubonSettings").Get<FubonSettings>();
+if (fubonSettings == null)
+{
+    throw new InvalidOperationException("FubonSettings is missing.");
+}
+
 // Add services to the container.
 
 builder.Services.AddControllers();
 // Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
 builder.Services.AddEndpointsApiExplorer();
 builder.Services.AddSwaggerGen();
-
 builder.Services.AddSingleton<FubonSDK>();
-builder.Services.AddSingleton<Account>();
+builder.Services.AddSingleton<Account>(provider =>
+{
+    var sdk = provider.GetRequiredService<FubonSDK>();
+    var logger = provider.GetRequiredService<ILogger<Program>>();
+    var loginResponse = sdk.Login(fubonSettings.Id, fubonSettings.Password, fubonSettings.CertPath, fubonSettings.CertPassword);
+    if (loginResponse.isSuccess != true || loginResponse.data[0] == null)
+    {
+        logger.LogError("Login failed.");
+        throw new Exception("Login failed.");
+    }
 
+    return loginResponse.data[0];
+});
 var app = builder.Build();
 
 // Configure the HTTP request pipeline.
diff --git a/appsettings.Development.json b/appsettings.Development.json
index 0c208ae..75b99b7 100644
--- a/appsettings.Development.json
+++ b/appsettings.Development.json
@@ -4,5 +4,11 @@
       "Default": "Information",
       "Microsoft.AspNetCore": "Warning"
     }
+  },
+    "FubonSettings":{
+    "Id": "UserId",
+    "Password": "Password",
+    "CertPath": "./static",
+    "CertPassword":"CertPassword"
   }
-}
+}
\ No newline at end of file
diff --git a/appsettings.json b/appsettings.json
index 10f68b8..b906b3c 100644
--- a/appsettings.json
+++ b/appsettings.json
@@ -5,5 +5,11 @@
       "Microsoft.AspNetCore": "Warning"
     }
   },
+  "FubonSettings":{
+    "Id": "UserId",
+    "Password": "Password",
+    "CertPath": "./static",
+    "CertPassword":"CertPassword"
+  },
   "AllowedHosts": "*"
 }