diff --git a/scripts/data_collector/utils.py b/scripts/data_collector/utils.py
index bf87d0de5e..0d701e1268 100644
--- a/scripts/data_collector/utils.py
+++ b/scripts/data_collector/utils.py
@@ -24,7 +24,6 @@
 HS_SYMBOLS_URL = "http://app.finance.ifeng.com/hq/list.php?type=stock_a&class={s_type}"
 
 CALENDAR_URL_BASE = "http://push2his.eastmoney.com/api/qt/stock/kline/get?secid={market}.{bench_code}&fields1=f1%2Cf2%2Cf3%2Cf4%2Cf5&fields2=f51%2Cf52%2Cf53%2Cf54%2Cf55%2Cf56%2Cf57%2Cf58&klt=101&fqt=0&beg=19900101&end=20991231"
-SZSE_CALENDAR_URL = "http://www.szse.cn/api/report/exchange/onepersistenthour/monthList?month={month}&random={random}"
 
 CALENDAR_BENCH_URL_MAP = {
     "CSI300": CALENDAR_URL_BASE.format(market=1, bench_code="000300"),
@@ -73,20 +72,28 @@ def _get_calendar(url):
     calendar = _CALENDAR_MAP.get(bench_code, None)
     if calendar is None:
         if bench_code.startswith("US_") or bench_code.startswith("IN_") or bench_code.startswith("BR_"):
-            print(Ticker(CALENDAR_BENCH_URL_MAP[bench_code]))
-            print(Ticker(CALENDAR_BENCH_URL_MAP[bench_code]).history(interval="1d", period="max"))
             df = Ticker(CALENDAR_BENCH_URL_MAP[bench_code]).history(interval="1d", period="max")
             calendar = df.index.get_level_values(level="date").map(pd.Timestamp).unique().tolist()
         else:
             if bench_code.upper() == "ALL":
-                import akshare as ak  # pylint: disable=C0415
-
-                trade_date_df = ak.tool_trade_date_hist_sina()
-                trade_date_list = trade_date_df["trade_date"].tolist()
-                trade_date_list = [pd.Timestamp(d) for d in trade_date_list]
-                dates = pd.DatetimeIndex(trade_date_list)
-                filtered_dates = dates[(dates >= "2000-01-04") & (dates <= pd.Timestamp.today().normalize())]
-                calendar = filtered_dates.tolist()
+                try:
+                    import akshare as ak  # pylint: disable=C0415
+
+                    trade_date_df = ak.tool_trade_date_hist_sina()
+                    trade_date_list = trade_date_df["trade_date"].tolist()
+                    trade_date_list = [pd.Timestamp(d) for d in trade_date_list]
+                    dates = pd.DatetimeIndex(trade_date_list)
+                    filtered_dates = dates[(dates >= "2000-01-04") & (dates <= pd.Timestamp.today().normalize())]
+                    calendar = filtered_dates.tolist()
+                except ImportError:
+                    logger.error(
+                        "akshare is required for fetching the full CN trading calendar. "
+                        "Install it with: pip install akshare"
+                    )
+                    raise
+                except Exception as e:
+                    logger.error(f"Failed to fetch trading calendar via akshare: {e}")
+                    raise
             else:
                 calendar = _get_calendar(CALENDAR_BENCH_URL_MAP[bench_code])
         _CALENDAR_MAP[bench_code] = calendar