diff --git a/GFramework.Core.Abstractions/state/IStateMachine.cs b/GFramework.Core.Abstractions/state/IStateMachine.cs
index fa3c130..53b09ed 100644
--- a/GFramework.Core.Abstractions/state/IStateMachine.cs
+++ b/GFramework.Core.Abstractions/state/IStateMachine.cs
@@ -17,25 +17,12 @@ public interface IStateMachine
     /// <param name="state">要注册的状态实例</param>
     IStateMachine Register(IState state);
 
-    /// <summary>
-    ///     从状态机中注销指定类型的状态
-    /// </summary>
-    /// <typeparam name="T">要注销的状态类型，必须实现IState接口</typeparam>
-    IStateMachine Unregister<T>() where T : IState;
-
     /// <summary>
     ///     异步从状态机中注销指定类型的状态
     /// </summary>
     /// <typeparam name="T">要注销的状态类型，必须实现IState接口</typeparam>
     Task<IStateMachine> UnregisterAsync<T>() where T : IState;
 
-    /// <summary>
-    ///     检查是否可以切换到指定类型的状态
-    /// </summary>
-    /// <typeparam name="T">目标状态类型，必须实现IState接口</typeparam>
-    /// <returns>如果可以切换则返回true，否则返回false</returns>
-    bool CanChangeTo<T>() where T : IState;
-
     /// <summary>
     ///     异步检查是否可以切换到指定类型的状态
     /// </summary>
@@ -43,13 +30,6 @@ public interface IStateMachine
     /// <returns>如果可以切换则返回true，否则返回false</returns>
     Task<bool> CanChangeToAsync<T>() where T : IState;
 
-    /// <summary>
-    ///     切换到指定类型的状态
-    /// </summary>
-    /// <typeparam name="T">要切换到的状态类型，必须实现IState接口</typeparam>
-    /// <returns>如果成功切换则返回true，否则返回false</returns>
-    bool ChangeTo<T>() where T : IState;
-
     /// <summary>
     ///     异步切换到指定类型的状态
     /// </summary>
@@ -89,12 +69,6 @@ public interface IStateMachine
     /// <returns>状态历史记录的只读副本</returns>
     IReadOnlyList<IState> GetStateHistory();
 
-    /// <summary>
-    ///     回退到上一个状态
-    /// </summary>
-    /// <returns>如果成功回退则返回true，否则返回false</returns>
-    bool GoBack();
-
     /// <summary>
     ///     异步回退到上一个状态
     /// </summary>
diff --git a/GFramework.Core/state/StateMachine.cs b/GFramework.Core/state/StateMachine.cs
index 178dc94..45c6bcf 100644
--- a/GFramework.Core/state/StateMachine.cs
+++ b/GFramework.Core/state/StateMachine.cs
@@ -39,15 +39,6 @@ public class StateMachine(int maxHistorySize = 10) : IStateMachine
         return this;
     }
 
-    /// <summary>
-    ///     从状态机中注销指定类型的状态
-    /// </summary>
-    /// <typeparam name="T">要注销的状态类型</typeparam>
-    public IStateMachine Unregister<T>() where T : IState
-    {
-        return UnregisterAsync<T>().GetAwaiter().GetResult();
-    }
-
     /// <summary>
     ///     异步注销指定类型的状态
     /// </summary>
@@ -75,17 +66,6 @@ public class StateMachine(int maxHistorySize = 10) : IStateMachine
         }
     }
 
-
-    /// <summary>
-    ///     检查是否可以切换到指定类型的状态
-    /// </summary>
-    /// <typeparam name="T">目标状态类型</typeparam>
-    /// <returns>如果可以切换则返回true，否则返回false</returns>
-    public bool CanChangeTo<T>() where T : IState
-    {
-        return CanChangeToAsync<T>().GetAwaiter().GetResult();
-    }
-
     /// <summary>
     ///     异步检查是否可以切换到指定类型的状态
     /// </summary>
@@ -110,18 +90,6 @@ public class StateMachine(int maxHistorySize = 10) : IStateMachine
     }
 
 
-    /// <summary>
-    ///     切换到指定类型的状态
-    /// </summary>
-    /// <typeparam name="T">目标状态类型</typeparam>
-    /// <returns>如果成功切换则返回true，否则返回false</returns>
-    /// <exception cref="InvalidOperationException">当目标状态未注册时抛出</exception>
-    public bool ChangeTo<T>() where T : IState
-    {
-        return ChangeToAsync<T>().GetAwaiter().GetResult();
-    }
-
-
     /// <summary>
     ///     异步切换到指定类型的状态
     /// </summary>
@@ -216,15 +184,6 @@ public class StateMachine(int maxHistorySize = 10) : IStateMachine
         }
     }
 
-    /// <summary>
-    ///     回退到上一个状态
-    /// </summary>
-    /// <returns>如果成功回退则返回true，否则返回false</returns>
-    public bool GoBack()
-    {
-        return GoBackAsync().GetAwaiter().GetResult();
-    }
-
     /// <summary>
     ///     异步回退到上一个状态
     /// </summary>