diff --git a/AIParkingApplication/LoginForm.Designer.cs b/AIParkingApplication/LoginForm.Designer.cs
index 791d40f..632cad4 100644
--- a/AIParkingApplication/LoginForm.Designer.cs
+++ b/AIParkingApplication/LoginForm.Designer.cs
@@ -34,8 +34,8 @@
             this.lblUsername = new System.Windows.Forms.Label();
             this.txtPassword = new System.Windows.Forms.TextBox();
             this.lblPassword = new System.Windows.Forms.Label();
-            this.lblServerAddress = new System.Windows.Forms.TextBox();
-            this.lblServerIP = new System.Windows.Forms.Label();
+            this.txtServerAddress = new System.Windows.Forms.TextBox();
+            this.lblServerAddress = new System.Windows.Forms.Label();
             this.btnLogin = new System.Windows.Forms.Button();
             this.btnExit = new System.Windows.Forms.Button();
             this.lblLoginStatus = new System.Windows.Forms.Label();
@@ -87,22 +87,22 @@
             this.lblPassword.TabIndex = 2;
             this.lblPassword.Text = "Mật khẩu";
             // 
+            // txtServerAddress
+            // 
+            this.txtServerAddress.Location = new System.Drawing.Point(294, 90);
+            this.txtServerAddress.Name = "txtServerAddress";
+            this.txtServerAddress.Size = new System.Drawing.Size(227, 20);
+            this.txtServerAddress.TabIndex = 1;
+            this.txtServerAddress.Text = "http://localhost:80/";
+            // 
             // lblServerAddress
             // 
-            this.lblServerAddress.Location = new System.Drawing.Point(294, 90);
+            this.lblServerAddress.AutoSize = true;
+            this.lblServerAddress.Location = new System.Drawing.Point(214, 93);
             this.lblServerAddress.Name = "lblServerAddress";
-            this.lblServerAddress.Size = new System.Drawing.Size(227, 20);
-            this.lblServerAddress.TabIndex = 1;
-            this.lblServerAddress.Text = "localhost";
-            // 
-            // lblServerIP
-            // 
-            this.lblServerIP.AutoSize = true;
-            this.lblServerIP.Location = new System.Drawing.Point(214, 93);
-            this.lblServerIP.Name = "lblServerIP";
-            this.lblServerIP.Size = new System.Drawing.Size(48, 13);
-            this.lblServerIP.TabIndex = 2;
-            this.lblServerIP.Text = "Máy chủ";
+            this.lblServerAddress.Size = new System.Drawing.Size(48, 13);
+            this.lblServerAddress.TabIndex = 2;
+            this.lblServerAddress.Text = "Máy chủ";
             // 
             // btnLogin
             // 
@@ -141,10 +141,10 @@
             this.Controls.Add(this.lblLoginStatus);
             this.Controls.Add(this.btnExit);
             this.Controls.Add(this.btnLogin);
-            this.Controls.Add(this.lblServerIP);
+            this.Controls.Add(this.lblServerAddress);
             this.Controls.Add(this.lblPassword);
             this.Controls.Add(this.lblUsername);
-            this.Controls.Add(this.lblServerAddress);
+            this.Controls.Add(this.txtServerAddress);
             this.Controls.Add(this.txtPassword);
             this.Controls.Add(this.txtUsername);
             this.Controls.Add(this.pictureBoxImageLogo);
@@ -168,8 +168,8 @@
         private System.Windows.Forms.Label lblUsername;
         private System.Windows.Forms.TextBox txtPassword;
         private System.Windows.Forms.Label lblPassword;
-        private System.Windows.Forms.TextBox lblServerAddress;
-        private System.Windows.Forms.Label lblServerIP;
+        private System.Windows.Forms.TextBox txtServerAddress;
+        private System.Windows.Forms.Label lblServerAddress;
         private System.Windows.Forms.Button btnLogin;
         private System.Windows.Forms.Button btnExit;
         private System.Windows.Forms.Label lblLoginStatus;
diff --git a/AIParkingApplication/LoginForm.cs b/AIParkingApplication/LoginForm.cs
index e789aa8..fc4ef11 100644
--- a/AIParkingApplication/LoginForm.cs
+++ b/AIParkingApplication/LoginForm.cs
@@ -13,13 +13,25 @@ namespace AIParkingApplication
             InitializeComponent();
             pictureBoxImageLogo.Image = new Bitmap(@".\Images\ApplicationLogo.ico");
             lblLoginStatus.Text = string.Empty;
-
-            apiController = new ApiController(serverBaseAddress);
             this.AcceptButton = btnLogin;
         }
 
         private async void Login()
         {
+            if (string.IsNullOrEmpty(txtServerAddress.Text))
+            {
+                lblLoginStatus.Text = "Địa chỉ server không được để trống!";
+                return;
+            }
+
+            if (!Util.IsUrlValid(txtServerAddress.Text))
+            {
+                lblLoginStatus.Text = "Địa chỉ server không đúng định dạng: \r\n http://localhost:80 hoặc http://192.168.1.2:80";
+                return;
+            }
+
+            apiController = new ApiController(txtServerAddress.Text);
+
             lblLoginStatus.Text = string.Empty;
             string username = txtUsername.Text;
             string password = txtPassword.Text;
@@ -28,6 +40,7 @@ namespace AIParkingApplication
                 lblLoginStatus.Text = "Tên tài khoản hoặc mật khẩu không được để trống!";
                 return;
             }
+
             var loginResult = await apiController.Login(new LoginModel { Username = username, Password = password });
             if (loginResult.IsLoginSuccess)
             {
diff --git a/AIParkingApplication/Util.cs b/AIParkingApplication/Util.cs
index 1b350ae..0827ae7 100644
--- a/AIParkingApplication/Util.cs
+++ b/AIParkingApplication/Util.cs
@@ -6,6 +6,7 @@ using System.Drawing;
 using System.IO;
 using System.Net.Http;
 using System.Net.NetworkInformation;
+using System.Text.RegularExpressions;
 using System.Threading.Tasks;
 using System.Windows.Forms;
 
@@ -168,6 +169,14 @@ namespace AIParkingApplication
                 //process.Close();
             }
         }
+
+        public static bool IsUrlValid(string url)
+        {
+
+            string pattern = @"^(http|https|ftp|)\://|[a-zA-Z0-9\-\.]+\.[a-zA-Z](:[a-zA-Z0-9]*)?/?([a-zA-Z0-9\-\._\?\,\'/\\\+&%\$#\=~])*[^\.\,\)\(\s]$";
+            Regex reg = new Regex(pattern, RegexOptions.Compiled | RegexOptions.IgnoreCase);
+            return reg.IsMatch(url);
+        }
     }
 
     public class PlateRequestEngineModel