diff --git a/excel_writer.py b/excel_writer.py
index 19908d8..5fa9d62 100644
--- a/excel_writer.py
+++ b/excel_writer.py
@@ -508,6 +508,9 @@ def write_vehicle_tracking_sheet(wb, settle_month, G, master_vehicles, vehicle_p
                               end_row=start_rn + len(persons) - 1, end_column=pool_col)
 
     # 列宽
+    # 隐藏BCD列（车架号/归属公司/车型）
+    for cl in ['B','C','D']:
+        ws.column_dimensions[cl].hidden = True
     col_widths = {'A':12,'B':18,'C':18,'D':10,'E':18,'F':8,'G':14}
     for cl, w in col_widths.items():
         ws.column_dimensions[cl].width = w