diff --git a/Polyclinic/PolyclinicBusinessLogic/BusinessLogics/UserLogic.cs b/Polyclinic/PolyclinicBusinessLogic/BusinessLogics/UserLogic.cs
index bf5f1dc..735bb03 100644
--- a/Polyclinic/PolyclinicBusinessLogic/BusinessLogics/UserLogic.cs
+++ b/Polyclinic/PolyclinicBusinessLogic/BusinessLogics/UserLogic.cs
@@ -1,35 +1,117 @@
-using PolyclinicContracts.BindingModels;
+using Microsoft.Extensions.Logging;
+using PolyclinicContracts.BindingModels;
 using PolyclinicContracts.BusinessLogicsContracts;
 using PolyclinicContracts.SearchModels;
+using PolyclinicContracts.StoragesContracts;
 using PolyclinicContracts.ViewModels;
 
 namespace PolyclinicBusinessLogic.BusinessLogics
 {
     public class UserLogic : IUserLogic
     {
+        private ILogger _logger;
+        private IUserStorage _userStorage;
+
+        public UserLogic(ILogger logger, IUserStorage userStorage)
+        {
+            _logger = logger;
+            _userStorage = userStorage;
+        }
+
         public bool Create(UserBindingModel model)
         {
-            throw new NotImplementedException();
+            CheckModel(model);
+            if (_userStorage.Insert(model) == null)
+            {
+                _logger.LogWarning("Insert operation failed");
+                return false;
+            }
+            return true;
         }
 
         public bool Delete(UserBindingModel model)
         {
-            throw new NotImplementedException();
+            CheckModel(model, false);
+            _logger.LogInformation("Delete. Id:{Id}", model.Id);
+            if (_userStorage.Delete(model) == null)
+            {
+                _logger.LogWarning("Delete operation failed");
+                return false;
+            }
+            return true;
         }
 
         public UserViewModel? ReadElement(UserSearchModel model)
         {
-            throw new NotImplementedException();
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            _logger.LogInformation("ReadElement. Email:{Email}. Id:{Id}", model.Email, model.Id);
+            var element = _userStorage.GetElement(model);
+            if (element == null)
+            {
+                _logger.LogWarning("ReadElement element not found");
+                return null;
+            }
+            _logger.LogInformation("ReadElement find. Id:{Id}", element.Id);
+            return element;
         }
 
         public List<UserViewModel>? ReadList(UserSearchModel? model)
         {
-            throw new NotImplementedException();
+            _logger.LogInformation("ReadList. Email:{Email}. Id:{Id}", model?.Email, model?.Id);
+            var list = model == null ? _userStorage.GetFullList() : _userStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                _logger.LogWarning("ReadList return null list");
+                return null;
+            }
+            _logger.LogInformation("ReadList. Count:{Count}", list.Count);
+            return list;
         }
 
         public bool Update(UserBindingModel model)
         {
-            throw new NotImplementedException();
+            CheckModel(model);
+            if (_userStorage.Update(model) == null)
+            {
+                _logger.LogWarning("Update operation failed");
+                return false;
+            }
+            return true;
+        }
+        private void CheckModel(UserBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+            if (string.IsNullOrEmpty(model.Email))
+            {
+                throw new ArgumentNullException("Нет email пользователя", nameof(model.Email));
+            }
+            if (string.IsNullOrEmpty(model.Password))
+            {
+                throw new ArgumentNullException("Нет пароля пользователя", nameof(model.Password));
+            }
+            if (string.IsNullOrEmpty(model.FIO))
+            {
+                throw new ArgumentNullException("Нет фио пользователя", nameof(model.FIO));
+            }
+            _logger.LogInformation("User. Email:{Email}. Id: {Id}", model.Email, model.Id);
+            var element = _userStorage.GetElement(new UserSearchModel
+            {
+                Email = model.Email
+            });
+            if (element != null && element.Id != model.Id)
+            {
+                throw new InvalidOperationException("Пользователь с таким email уже есть");
+            }
         }
     }
 }
diff --git a/Polyclinic/PolyclinicBusinessLogic/PolyclinicBusinessLogic.csproj b/Polyclinic/PolyclinicBusinessLogic/PolyclinicBusinessLogic.csproj
index 82ea6fe..329c997 100644
--- a/Polyclinic/PolyclinicBusinessLogic/PolyclinicBusinessLogic.csproj
+++ b/Polyclinic/PolyclinicBusinessLogic/PolyclinicBusinessLogic.csproj
@@ -6,6 +6,10 @@
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="7.0.0" />
+  </ItemGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\PolyclinicContracts\PolyclinicContracts.csproj" />
   </ItemGroup>