diff --git a/framework/src/Volo.Abp.IdentityModel/Volo.Abp.IdentityModel.csproj b/framework/src/Volo.Abp.IdentityModel/Volo.Abp.IdentityModel.csproj
index ce26fe7bea..6c19f18397 100644
--- a/framework/src/Volo.Abp.IdentityModel/Volo.Abp.IdentityModel.csproj
+++ b/framework/src/Volo.Abp.IdentityModel/Volo.Abp.IdentityModel.csproj
@@ -17,6 +17,7 @@
   <ItemGroup>
     <PackageReference Include="IdentityModel" Version="4.1.1" />
     <PackageReference Include="Microsoft.Extensions.Http" Version="3.1.2" />
+    <ProjectReference Include="..\Volo.Abp.MultiTenancy\Volo.Abp.MultiTenancy.csproj" />
     <ProjectReference Include="..\Volo.Abp.Threading\Volo.Abp.Threading.csproj" />
   </ItemGroup>
 
diff --git a/framework/src/Volo.Abp.IdentityModel/Volo/Abp/IdentityModel/AbpIdentityModelModule.cs b/framework/src/Volo.Abp.IdentityModel/Volo/Abp/IdentityModel/AbpIdentityModelModule.cs
index d0a08707b5..7ab97c49fe 100644
--- a/framework/src/Volo.Abp.IdentityModel/Volo/Abp/IdentityModel/AbpIdentityModelModule.cs
+++ b/framework/src/Volo.Abp.IdentityModel/Volo/Abp/IdentityModel/AbpIdentityModelModule.cs
@@ -1,11 +1,13 @@
 using Microsoft.Extensions.DependencyInjection;
 using Volo.Abp.Modularity;
+using Volo.Abp.MultiTenancy;
 using Volo.Abp.Threading;
 
 namespace Volo.Abp.IdentityModel
 {
     [DependsOn(
-        typeof(AbpThreadingModule)
+        typeof(AbpThreadingModule),
+        typeof(AbpMultiTenancyModule)
         )]
     public class AbpIdentityModelModule : AbpModule
     {
@@ -13,7 +15,7 @@ namespace Volo.Abp.IdentityModel
         {
             var configuration = context.Services.GetConfiguration();
 
-            context.Services.AddHttpClient();
+            context.Services.AddHttpClient(IdentityModelAuthenticationService.HttpClientName);
 
             Configure<AbpIdentityClientOptions>(configuration);
         }
diff --git a/framework/src/Volo.Abp.IdentityModel/Volo/Abp/IdentityModel/IdentityModelAuthenticationService.cs b/framework/src/Volo.Abp.IdentityModel/Volo/Abp/IdentityModel/IdentityModelAuthenticationService.cs
index b78a05c684..3625aacb17 100644
--- a/framework/src/Volo.Abp.IdentityModel/Volo/Abp/IdentityModel/IdentityModelAuthenticationService.cs
+++ b/framework/src/Volo.Abp.IdentityModel/Volo/Abp/IdentityModel/IdentityModelAuthenticationService.cs
@@ -11,6 +11,7 @@ using System.Net.Http;
 using System.Net.Http.Headers;
 using System.Threading.Tasks;
 using Volo.Abp.DependencyInjection;
+using Volo.Abp.MultiTenancy;
 using Volo.Abp.Threading;
 
 namespace Volo.Abp.IdentityModel
@@ -18,19 +19,23 @@ namespace Volo.Abp.IdentityModel
     [Dependency(ReplaceServices = true)]
     public class IdentityModelAuthenticationService : IIdentityModelAuthenticationService, ITransientDependency
     {
+        public const string HttpClientName = "IdentityModelAuthenticationServiceHttpClientName";
         public ILogger<IdentityModelAuthenticationService> Logger { get; set; }
         protected AbpIdentityClientOptions ClientOptions { get; }
         protected ICancellationTokenProvider CancellationTokenProvider { get; }
         protected IHttpClientFactory HttpClientFactory { get; }
+        protected ICurrentTenant CurrentTenant { get; }
 
         public IdentityModelAuthenticationService(
             IOptions<AbpIdentityClientOptions> options,
             ICancellationTokenProvider cancellationTokenProvider,
-            IHttpClientFactory httpClientFactory)
+            IHttpClientFactory httpClientFactory,
+            ICurrentTenant currentTenant)
         {
             ClientOptions = options.Value;
             CancellationTokenProvider = cancellationTokenProvider;
             HttpClientFactory = httpClientFactory;
+            CurrentTenant = currentTenant;
             Logger = NullLogger<IdentityModelAuthenticationService>.Instance;
         }
 
@@ -46,7 +51,6 @@ namespace Volo.Abp.IdentityModel
 
             SetAccessToken(client, accessToken);
             return true;
-
         }
 
         protected virtual async Task<string> GetAccessTokenOrNullAsync(string identityClientName)
@@ -106,40 +110,39 @@ namespace Volo.Abp.IdentityModel
         protected virtual async Task<DiscoveryDocumentResponse> GetDiscoveryResponse(
             IdentityClientConfiguration configuration)
         {
-            using (var httpClient = HttpClientFactory.CreateClient())
+            var httpClient = HttpClientFactory.CreateClient(HttpClientName);
+            return await httpClient.GetDiscoveryDocumentAsync(new DiscoveryDocumentRequest
             {
-                return await httpClient.GetDiscoveryDocumentAsync(new DiscoveryDocumentRequest
+                Address = configuration.Authority,
+                Policy =
                 {
-                    Address = configuration.Authority,
-                    Policy =
-                    {
-                        RequireHttps = configuration.RequireHttps
-                    }
-                });
-            }
+                    RequireHttps = configuration.RequireHttps
+                }
+            });
         }
 
         protected virtual async Task<TokenResponse> GetTokenResponse(
             DiscoveryDocumentResponse discoveryResponse,
             IdentityClientConfiguration configuration)
         {
-            using (var httpClient = HttpClientFactory.CreateClient())
+            var httpClient = HttpClientFactory.CreateClient(HttpClientName);
+
+            AddHeaders(httpClient);
+
+            switch (configuration.GrantType)
             {
-                switch (configuration.GrantType)
-                {
-                    case OidcConstants.GrantTypes.ClientCredentials:
-                        return await httpClient.RequestClientCredentialsTokenAsync(
-                            await CreateClientCredentialsTokenRequestAsync(discoveryResponse, configuration),
-                            CancellationTokenProvider.Token
-                        );
-                    case OidcConstants.GrantTypes.Password:
-                        return await httpClient.RequestPasswordTokenAsync(
-                            await CreatePasswordTokenRequestAsync(discoveryResponse, configuration),
-                            CancellationTokenProvider.Token
-                        );
-                    default:
-                        throw new AbpException("Grant type was not implemented: " + configuration.GrantType);
-                }
+                case OidcConstants.GrantTypes.ClientCredentials:
+                    return await httpClient.RequestClientCredentialsTokenAsync(
+                        await CreateClientCredentialsTokenRequestAsync(discoveryResponse, configuration),
+                        CancellationTokenProvider.Token
+                    );
+                case OidcConstants.GrantTypes.Password:
+                    return await httpClient.RequestPasswordTokenAsync(
+                        await CreatePasswordTokenRequestAsync(discoveryResponse, configuration),
+                        CancellationTokenProvider.Token
+                    );
+                default:
+                    throw new AbpException("Grant type was not implemented: " + configuration.GrantType);
             }
         }
 
@@ -186,5 +189,15 @@ namespace Volo.Abp.IdentityModel
 
             return Task.CompletedTask;
         }
+
+        protected virtual void AddHeaders(HttpClient client)
+        {
+            //tenantId
+            if (CurrentTenant.Id.HasValue)
+            {
+                //TODO: Use AbpAspNetCoreMultiTenancyOptions to get the key
+                client.DefaultRequestHeaders.Add(TenantResolverConsts.DefaultTenantKey, CurrentTenant.Id.Value.ToString());
+            }
+        }
     }
 }