diff --git a/Model/RuYuanZaiYuanCountModel.py b/Model/RuYuanZaiYuanCountModel.py
index f314bb5..529d581 100644
--- a/Model/RuYuanZaiYuanCountModel.py
+++ b/Model/RuYuanZaiYuanCountModel.py
@@ -53,14 +53,26 @@ class RuYuanZaiYuanModel:
             calculated_total = enroll_data.get("urban", 0) + enroll_data.get("town", 0) + enroll_data.get("rural", 0)
             total_enroll.append(calculated_total / 10000)  # 转换为万人
 
-        # 2022年基数
-        series_data_4 = [None, None, None, None, None, None, None, 105.6714, 105.6714, 105.6714],
+        # 添加2022年基数的粉色折线
+        base_year = "2022"
+        # 找到2022年在years中的索引位置
+        base_index = years.index(base_year) if base_year in years else 0
+        # 获取2022年的总入园数作为基数
+        base_value = total_enroll[base_index] if base_index < len(total_enroll) else 0
+        # 创建2022年基数折线数据（2022-2024年）
+        base_2022_line = []
+        for i, year in enumerate(years):
+            # 只在2022年及之后显示基数线
+            if i >= base_index:
+                base_2022_line.append(base_value)
+            else:
+                base_2022_line.append(None)  # 2022年之前不显示
         data = {"xAxis_data": years,
                 "series_data_0": urban_data,        # 城区
                 "series_data_1": town_data,         # 镇区
                 "series_data_2": rural_data,        # 乡村
                 "series_data_3": total_enroll,      # 总入园数
-                "series_data_4": series_data_4
+                "series_data_4": base_2022_line      # 2022年基数
                 }
         return data
 
diff --git a/Model/__pycache__/RuYuanZaiYuanCountModel.cpython-310.pyc b/Model/__pycache__/RuYuanZaiYuanCountModel.cpython-310.pyc
index d2d3f15..2ea7646 100644
Binary files a/Model/__pycache__/RuYuanZaiYuanCountModel.cpython-310.pyc and b/Model/__pycache__/RuYuanZaiYuanCountModel.cpython-310.pyc differ