diff --git a/func/Module_SA_label_v2.py b/func/Module_SA_label_v2.py
index 2bcb003..8c5b200 100644
--- a/func/Module_SA_label_v2.py
+++ b/func/Module_SA_label_v2.py
@@ -973,6 +973,10 @@ class MainWindow_SA_label(QMainWindow):
                 signal_min = min(signal_min, 90)
             elif channel == "Stage":
                 continue
+            # elif channel == "0.7lowpass_resp":
+            #     # 上限上移0.1，下限下移0.1
+            #     signal_max = signal_max + 0.1
+            #     signal_min = signal_min - 0.1
             else:
                 # 上限上移2%，下限下移2%
                 delta = abs(signal_max - signal_min) * 0.02
@@ -1427,8 +1431,15 @@ class MainWindow_SA_label(QMainWindow):
         event_info = self.data.df_revised[self.data.df_revised["Index"] == index].iloc[0].copy()
         if self.selected_event_info is not None:
             if self.selected_event_info["Index"] != event_info["Index"]:
-                if self.selected_event_rect is not None:
-                    self.selected_event_rect.set_alpha(0.2)
+                if self.selected_event_info["Index"] == -1:
+                    # 新建事件，删除
+                    if self.selected_event_rect is not None:
+                        self.selected_event_rect.remove()
+                        self.selected_event_rect = None
+                else:
+                    # 取消之前选中事件的高亮
+                    if self.selected_event_rect is not None:
+                        self.selected_event_rect.set_alpha(0.2)
 
         self.selected_event_info = event_info
         self.selected_event_rect = self.event_ploy_collection[event_info["Index"]]