diff --git a/modules/account/src/Volo.Abp.Account.Web/Pages/Account/AccountPageModel.cs b/modules/account/src/Volo.Abp.Account.Web/Pages/Account/AccountPageModel.cs
index ebd556f8e2..f229253c4a 100644
--- a/modules/account/src/Volo.Abp.Account.Web/Pages/Account/AccountPageModel.cs
+++ b/modules/account/src/Volo.Abp.Account.Web/Pages/Account/AccountPageModel.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Threading.Tasks;
 using Microsoft.AspNetCore.Identity;
 using Microsoft.Extensions.Options;
 using Volo.Abp.Account.Localization;
@@ -54,4 +55,22 @@ public abstract class AccountPageModel : AbpPageModel
 
         return exception.Message;
     }
+
+    protected virtual async Task<string> GetUserNameFromEmail(string email)
+    {
+        var userName = email.Split('@')[0];
+        var existUser = await UserManager.FindByNameAsync(userName);
+        while (existUser != null)
+        {
+            var randomUserName = userName + RandomHelper.GetRandom(1000, 9999);
+            existUser = await UserManager.FindByNameAsync(randomUserName);
+            if (existUser == null)
+            {
+                userName = randomUserName;
+                break;
+            }
+        }
+
+        return userName;
+    }
 }
diff --git a/modules/account/src/Volo.Abp.Account.Web/Pages/Account/Login.cshtml.cs b/modules/account/src/Volo.Abp.Account.Web/Pages/Account/Login.cshtml.cs
index 9d6e2d8b9b..187d1b9f4f 100644
--- a/modules/account/src/Volo.Abp.Account.Web/Pages/Account/Login.cshtml.cs
+++ b/modules/account/src/Volo.Abp.Account.Web/Pages/Account/Login.cshtml.cs
@@ -269,8 +269,9 @@ public class LoginModel : AccountPageModel
         await IdentityOptions.SetAsync();
 
         var emailAddress = info.Principal.FindFirstValue(AbpClaimTypes.Email);
+        var userName = await GetUserNameFromEmail(emailAddress);
 
-        var user = new IdentityUser(GuidGenerator.Create(), emailAddress, emailAddress, CurrentTenant.Id);
+        var user = new IdentityUser(GuidGenerator.Create(), userName, emailAddress, CurrentTenant.Id);
 
         CheckIdentityErrors(await UserManager.CreateAsync(user));
         CheckIdentityErrors(await UserManager.SetEmailAsync(user, emailAddress));
diff --git a/modules/account/src/Volo.Abp.Account.Web/Pages/Account/Register.cshtml b/modules/account/src/Volo.Abp.Account.Web/Pages/Account/Register.cshtml
index 137715804a..fabe41ae6f 100644
--- a/modules/account/src/Volo.Abp.Account.Web/Pages/Account/Register.cshtml
+++ b/modules/account/src/Volo.Abp.Account.Web/Pages/Account/Register.cshtml
@@ -12,11 +12,11 @@
             <a href="@Url.Page("./Login", new {returnUrl = Model.ReturnUrl, returnUrlHash = Model.ReturnUrlHash})" class="text-decoration-none">@L["Login"]</a>
         </strong>
         <form method="post" class="mt-4">
-            @if (!Model.IsExternalLogin && Model.EnableLocalRegister)
+            @if ((!Model.IsExternalLogin || Model.UserNameExtracted) && Model.EnableLocalRegister)
             {
                 <abp-input asp-for="Input.UserName" auto-focus="true"/>
             }
-            
+
             @if(Model.EnableLocalRegister || Model.IsExternalLogin)
             {
                  <abp-input asp-for="Input.EmailAddress"/>
@@ -26,16 +26,16 @@
             {
                 <abp-input asp-for="Input.Password"/>
             }
-            
+
             @if(Model.EnableLocalRegister || Model.IsExternalLogin)
             {
                  <div class="d-grid gap-2">
                      <abp-button button-type="Primary" type="submit" class="btn-lg mt-4">@L["Register"]</abp-button>
                  </div>
             }
-            
+
         </form>
-        
+
         @if (!Model.IsExternalLogin && Model.VisibleExternalProviders.Any())
         {
             <div class="mt-2">
@@ -48,6 +48,6 @@
                 </form>
             </div>
         }
-        
+
     </div>
 </div>
diff --git a/modules/account/src/Volo.Abp.Account.Web/Pages/Account/Register.cshtml.cs b/modules/account/src/Volo.Abp.Account.Web/Pages/Account/Register.cshtml.cs
index 7bc536ba9d..1ef7f00d55 100644
--- a/modules/account/src/Volo.Abp.Account.Web/Pages/Account/Register.cshtml.cs
+++ b/modules/account/src/Volo.Abp.Account.Web/Pages/Account/Register.cshtml.cs
@@ -35,19 +35,20 @@ public class RegisterModel : AccountPageModel
 
     [BindProperty(SupportsGet = true)]
     public string ExternalLoginAuthSchema { get; set; }
-    
+
+    public bool UserNameExtracted { get; set; }
     public IEnumerable<ExternalProviderModel> ExternalProviders { get; set; }
     public IEnumerable<ExternalProviderModel> VisibleExternalProviders => ExternalProviders.Where(x => !string.IsNullOrWhiteSpace(x.DisplayName));
     public bool EnableLocalRegister { get; set; }
     public bool IsExternalLoginOnly => EnableLocalRegister == false && ExternalProviders?.Count() == 1;
     public string ExternalLoginScheme => IsExternalLoginOnly ? ExternalProviders?.SingleOrDefault()?.AuthenticationScheme : null;
-    
+
     protected IAuthenticationSchemeProvider SchemeProvider { get; }
-    
+
     protected AbpAccountOptions AccountOptions { get; }
 
     public RegisterModel(
-        IAccountAppService accountAppService, 
+        IAccountAppService accountAppService,
         IAuthenticationSchemeProvider schemeProvider,
         IOptions<AbpAccountOptions> accountOptions)
     {
@@ -66,16 +67,16 @@ public class RegisterModel : AccountPageModel
             {
                 return await OnPostExternalLogin(ExternalLoginScheme);
             }
-            
+
             Alerts.Warning(L["SelfRegistrationDisabledMessage"]);
         }
-        
+
         await TrySetEmailAsync();
-        
+
         return Page();
     }
 
-    private async Task TrySetEmailAsync()
+    protected virtual async Task TrySetEmailAsync()
     {
         if (IsExternalLogin)
         {
@@ -98,7 +99,8 @@ public class RegisterModel : AccountPageModel
                 return;
             }
 
-            Input = new PostInput { EmailAddress = emailClaim.Value };
+            var userName = await GetUserNameFromEmail(emailClaim.Value);
+            Input = new PostInput { UserName = userName, EmailAddress = emailClaim.Value };
         }
     }
 
@@ -121,8 +123,12 @@ public class RegisterModel : AccountPageModel
                     Logger.LogWarning("External login info is not available");
                     return RedirectToPage("./Login");
                 }
-
-                await RegisterExternalUserAsync(externalLoginInfo, Input.EmailAddress);
+                if (Input.UserName.IsNullOrWhiteSpace())
+                {
+                    Input.UserName = await GetUserNameFromEmail(Input.EmailAddress);
+                }
+                UserNameExtracted = true;
+                await RegisterExternalUserAsync(externalLoginInfo, Input.UserName, Input.EmailAddress);
             }
             else
             {
@@ -156,11 +162,11 @@ public class RegisterModel : AccountPageModel
         await SignInManager.SignInAsync(user, isPersistent: true);
     }
 
-    protected virtual async Task RegisterExternalUserAsync(ExternalLoginInfo externalLoginInfo, string emailAddress)
+    protected virtual async Task RegisterExternalUserAsync(ExternalLoginInfo externalLoginInfo, string userName, string emailAddress)
     {
         await IdentityOptions.SetAsync();
 
-        var user = new IdentityUser(GuidGenerator.Create(), emailAddress, emailAddress, CurrentTenant.Id);
+        var user = new IdentityUser(GuidGenerator.Create(), userName, emailAddress, CurrentTenant.Id);
 
         (await UserManager.CreateAsync(user)).CheckErrors();
         (await UserManager.AddDefaultRolesAsync(user)).CheckErrors();
@@ -191,7 +197,7 @@ public class RegisterModel : AccountPageModel
         {
             return true;
         }
-        
+
         if (!EnableLocalRegister)
         {
             return false;
@@ -199,10 +205,9 @@ public class RegisterModel : AccountPageModel
 
         return true;
     }
-    
+
     protected virtual async Task<List<ExternalProviderModel>> GetExternalProviders()
     {
-        
         var schemes = await SchemeProvider.GetAllSchemesAsync();
 
         return schemes
@@ -214,7 +219,7 @@ public class RegisterModel : AccountPageModel
             })
             .ToList();
     }
-    
+
     protected virtual async Task<IActionResult> OnPostExternalLogin(string provider)
     {
         var redirectUrl = Url.Page("./Login", pageHandler: "ExternalLoginCallback", values: new { ReturnUrl, ReturnUrlHash });
@@ -241,7 +246,7 @@ public class RegisterModel : AccountPageModel
         [DisableAuditing]
         public string Password { get; set; }
     }
-    
+
     public class ExternalProviderModel
     {
         public string DisplayName { get; set; }