diff --git a/modules/identity/src/Volo.Abp.Identity.Domain/Volo/Abp/Identity/IOrganizationUnitRepository.cs b/modules/identity/src/Volo.Abp.Identity.Domain/Volo/Abp/Identity/IOrganizationUnitRepository.cs
index 4d5bf7d060..bf39874e00 100644
--- a/modules/identity/src/Volo.Abp.Identity.Domain/Volo/Abp/Identity/IOrganizationUnitRepository.cs
+++ b/modules/identity/src/Volo.Abp.Identity.Domain/Volo/Abp/Identity/IOrganizationUnitRepository.cs
@@ -65,6 +65,12 @@ namespace Volo.Abp.Identity
             CancellationToken cancellationToken = default
         );
 
+        Task<int> GetUnaddedRolesCountAsync(
+            OrganizationUnit organizationUnit,
+            string filter = null,
+            CancellationToken cancellationToken = default
+        );
+
         Task<List<IdentityUser>> GetMembersAsync(
             OrganizationUnit organizationUnit,
             string sorting = null,
@@ -91,6 +97,12 @@ namespace Volo.Abp.Identity
             CancellationToken cancellationToken = default
         );
 
+        Task<int> GetUnaddedUsersCountAsync(
+            OrganizationUnit organizationUnit,
+            string filter = null,
+            CancellationToken cancellationToken = default
+        );
+
         Task RemoveAllRolesAsync(
             OrganizationUnit organizationUnit,
             CancellationToken cancellationToken = default
diff --git a/modules/identity/src/Volo.Abp.Identity.EntityFrameworkCore/Volo/Abp/Identity/EntityFrameworkCore/EfCoreOrganizationUnitRepository.cs b/modules/identity/src/Volo.Abp.Identity.EntityFrameworkCore/Volo/Abp/Identity/EntityFrameworkCore/EfCoreOrganizationUnitRepository.cs
index ebfa9b8ebb..59fbd9518e 100644
--- a/modules/identity/src/Volo.Abp.Identity.EntityFrameworkCore/Volo/Abp/Identity/EntityFrameworkCore/EfCoreOrganizationUnitRepository.cs
+++ b/modules/identity/src/Volo.Abp.Identity.EntityFrameworkCore/Volo/Abp/Identity/EntityFrameworkCore/EfCoreOrganizationUnitRepository.cs
@@ -132,6 +132,19 @@ namespace Volo.Abp.Identity.EntityFrameworkCore
                 .ToListAsync(cancellationToken);
         }
 
+        public virtual async Task<int> GetUnaddedRolesCountAsync(
+            OrganizationUnit organizationUnit,
+            string filter = null,
+            CancellationToken cancellationToken = default)
+        {
+            var roleIds = organizationUnit.Roles.Select(r => r.RoleId).ToList();
+
+            return await DbContext.Roles
+                .Where(r => !roleIds.Contains(r.Id))
+                .WhereIf(!filter.IsNullOrWhiteSpace(), r => r.Name.Contains(filter))
+                .CountAsync(cancellationToken);
+        }
+
         public virtual async Task<List<IdentityUser>> GetMembersAsync(
             OrganizationUnit organizationUnit,
             string sorting = null,
@@ -190,6 +203,24 @@ namespace Volo.Abp.Identity.EntityFrameworkCore
                 .ToListAsync(cancellationToken);
         }
 
+        public virtual async Task<int> GetUnaddedUsersCountAsync(
+            OrganizationUnit organizationUnit,
+            string filter = null,
+            CancellationToken cancellationToken = default)
+        {
+            var userIdsInOrganizationUnit = DbContext.Set<IdentityUserOrganizationUnit>()
+                .Where(uou => uou.OrganizationUnitId == organizationUnit.Id)
+                .Select(uou => uou.UserId);
+
+            return await DbContext.Users
+                .Where(u => !userIdsInOrganizationUnit.Contains(u.Id))
+                .WhereIf(!filter.IsNullOrWhiteSpace(), u =>
+                    u.UserName.Contains(filter) ||
+                    u.Email.Contains(filter) ||
+                    (u.PhoneNumber != null && u.PhoneNumber.Contains(filter)))
+                .CountAsync(cancellationToken);
+        }
+
         public override IQueryable<OrganizationUnit> WithDetails()
         {
             return GetQueryable().IncludeDetails();
diff --git a/modules/identity/src/Volo.Abp.Identity.MongoDB/Volo/Abp/Identity/MongoDB/MongoOrganizationUnitRepository.cs b/modules/identity/src/Volo.Abp.Identity.MongoDB/Volo/Abp/Identity/MongoDB/MongoOrganizationUnitRepository.cs
index 2b28a2e3a1..10ae4cd038 100644
--- a/modules/identity/src/Volo.Abp.Identity.MongoDB/Volo/Abp/Identity/MongoDB/MongoOrganizationUnitRepository.cs
+++ b/modules/identity/src/Volo.Abp.Identity.MongoDB/Volo/Abp/Identity/MongoDB/MongoOrganizationUnitRepository.cs
@@ -126,6 +126,19 @@ namespace Volo.Abp.Identity.MongoDB
                 .ToListAsync(cancellationToken);
         }
 
+        public async Task<int> GetUnaddedRolesCountAsync(
+            OrganizationUnit organizationUnit,
+            string filter = null,
+            CancellationToken cancellationToken = default)
+        {
+            var roleIds = organizationUnit.Roles.Select(r => r.RoleId).ToArray();
+            return await DbContext.Roles.AsQueryable()
+                .Where(r => !roleIds.Contains(r.Id))
+                .WhereIf(!filter.IsNullOrWhiteSpace(), r => r.Name.Contains(filter))
+                .As<IMongoQueryable<IdentityRole>>()
+                .CountAsync(cancellationToken);
+        }
+
         public virtual async Task<List<IdentityUser>> GetMembersAsync(
             OrganizationUnit organizationUnit,
             string sorting = null,
@@ -178,6 +191,22 @@ namespace Volo.Abp.Identity.MongoDB
                 .ToListAsync(GetCancellationToken(cancellationToken));
         }
 
+        public async Task<int> GetUnaddedUsersCountAsync(OrganizationUnit organizationUnit, string filter = null,
+            CancellationToken cancellationToken = default)
+        {
+            return await DbContext.Users.AsQueryable()
+                .Where(u => !u.OrganizationUnits.Any(uou => uou.OrganizationUnitId == organizationUnit.Id))
+                .WhereIf<IdentityUser, IMongoQueryable<IdentityUser>>(
+                    !filter.IsNullOrWhiteSpace(),
+                    u =>
+                        u.UserName.Contains(filter) ||
+                        u.Email.Contains(filter) ||
+                        (u.PhoneNumber != null && u.PhoneNumber.Contains(filter))
+                )
+                .As<IMongoQueryable<IdentityUser>>()
+                .CountAsync(GetCancellationToken(cancellationToken));
+        }
+
         public virtual Task RemoveAllRolesAsync(OrganizationUnit organizationUnit, CancellationToken cancellationToken = default)
         {
             organizationUnit.Roles.Clear();
diff --git a/modules/identity/test/Volo.Abp.Identity.TestBase/Volo/Abp/Identity/OrganizationUnitRepository_Tests.cs b/modules/identity/test/Volo.Abp.Identity.TestBase/Volo/Abp/Identity/OrganizationUnitRepository_Tests.cs
index 97544cd1e9..a671ba3284 100644
--- a/modules/identity/test/Volo.Abp.Identity.TestBase/Volo/Abp/Identity/OrganizationUnitRepository_Tests.cs
+++ b/modules/identity/test/Volo.Abp.Identity.TestBase/Volo/Abp/Identity/OrganizationUnitRepository_Tests.cs
@@ -305,5 +305,22 @@ namespace Volo.Abp.Identity
             unaddedRoles.ShouldNotContain(u => u.Name == "moderator");
             unaddedRoles.ShouldContain(u => u.Name.Contains("admin"));
         }
+
+        [Fact]
+        public async Task GetUnaddedUsersCountOfOrganizationUnitAsync()
+        {
+            var ou = await _organizationUnitRepository.GetAsync("OU111", true);
+            var count = await _organizationUnitRepository.GetUnaddedUsersCountAsync(ou);
+            count.ShouldBeGreaterThan(0);
+
+        }
+
+        [Fact]
+        public async Task GetUnaddedRolesCountOfOrganizationUnitAsync()
+        {
+            var ou = await _organizationUnitRepository.GetAsync("OU111", true);
+            var count = await _organizationUnitRepository.GetUnaddedRolesCountAsync(ou);
+            count.ShouldBeGreaterThan(0);
+        }
     }
 }