diff --git a/func/Module_approximately_align.py b/func/Module_approximately_align.py
index 781e6af..3482505 100644
--- a/func/Module_approximately_align.py
+++ b/func/Module_approximately_align.py
@@ -478,15 +478,22 @@ class MainWindow_approximately_align(QMainWindow):
     def __slot_btn_CutOff__(self):
         PublicFunc.__disableAllButton__(self, ButtonState)
 
-        Config["orgBcgConfig"].update({"PreA": self.ui.spinBox_orgBcgPreA.value(),
-                                       "PreCut": self.ui.spinBox_orgBcgPreCut.value(),
-                                       "PostCut": self.ui.spinBox_orgBcgPostCut.value()})
-        Config["PSGConfig"].update({"PreA": self.ui.spinBox_PSGPreA.value(),
-                                    "PreCut": self.ui.spinBox_PSGPreCut.value(),
-                                    "PostCut": self.ui.spinBox_PSGPostCut.value()})
+        if self.ui.spinBox_orgBcgPreA.value() + self.ui.spinBox_orgBcgPostCut.value() >= len(self.data.processed_downsample_orgBcg):
+            result = Result().failure(
+                info=Constants.OPERATION_FAILURE + Constants.FAILURE_REASON["OrgBCG_Cut_Length_Not_Correct"])
+        elif self.ui.spinBox_PSGPreCut.value() + self.ui.spinBox_PSGPostCut.value() >= len(self.data.processed_downsample_Tho):
+            result = Result().failure(
+                info=Constants.OPERATION_FAILURE + Constants.FAILURE_REASON["PSG_Cut_Length_Not_Correct"])
+        else:
+            Config["orgBcgConfig"].update({"PreA": self.ui.spinBox_orgBcgPreA.value(),
+                                           "PreCut": self.ui.spinBox_orgBcgPreCut.value(),
+                                           "PostCut": self.ui.spinBox_orgBcgPostCut.value()})
+            Config["PSGConfig"].update({"PreA": self.ui.spinBox_PSGPreA.value(),
+                                        "PreCut": self.ui.spinBox_PSGPreCut.value(),
+                                        "PostCut": self.ui.spinBox_PSGPostCut.value()})
 
-        PublicFunc.progressbar_update(self, 1, 1, Constants.DRAWING_DATA, 0)
-        result = self.__plot__()
+            PublicFunc.progressbar_update(self, 1, 1, Constants.DRAWING_DATA, 0)
+            result = self.__plot__()
 
         if not result.status:
             PublicFunc.text_output(self.ui, "(1/1)" + result.info, Constants.TIPS_TYPE_ERROR)
diff --git a/func/utils/Constants.py b/func/utils/Constants.py
index c6f3c3b..20367c4 100644
--- a/func/utils/Constants.py
+++ b/func/utils/Constants.py
@@ -110,6 +110,8 @@ class Constants:
         "Interval_Args_Not_Correct": "（间期参数输入不正确，上间期阈值应大于下间期阈值）",
         "Save_Permission_Denied": "（所保存的文件正在被其他进程使用）",
         "Save_File_Not_Found": "（保存路径不存在）",
+        "OrgBCG_Cut_Length_Not_Correct": "（OrgBCG的切割长度不正确，Pre+Post长度大于信号长度）",
+        "PSG_Cut_Length_Not_Correct": "（PSG的切割长度不正确，Pre+Post长度大于信号长度）",
 
         "Open_Data_Exception": "（打开数据异常）",
         "Process_Exception": "（处理异常）",