diff --git a/schedule.conf b/schedule.conf
index 1d5e644..f33dfa2 100644
--- a/schedule.conf
+++ b/schedule.conf
@@ -1 +1 @@
-24
+1
diff --git a/update.sh b/update.sh
index 5f2df5e..1a12100 100644
--- a/update.sh
+++ b/update.sh
@@ -1,11 +1,17 @@
 #!/bin/sh
 set -eu
 
+# 平台按 schedule.conf 每小时执行；脚本内部只在北京时间 11 点真正写入数据。
 SCRIPT_DIR=$(CDPATH= cd -- "$(dirname -- "$0")" && pwd)
 TMP_FILE="$SCRIPT_DIR/data.json.tmp"
 OUTPUT_FILE="$SCRIPT_DIR/data.json"
 
-python3 "$SCRIPT_DIR/update_report_data.py" "$TMP_FILE"
+rm -f "$TMP_FILE"
+python3 "$SCRIPT_DIR/update_report_data.py" "$TMP_FILE" "$@"
 
-mv "$TMP_FILE" "$OUTPUT_FILE"
-echo "Updated $OUTPUT_FILE"
+if [ -f "$TMP_FILE" ]; then
+  mv "$TMP_FILE" "$OUTPUT_FILE"
+  echo "Updated $OUTPUT_FILE"
+else
+  echo "Skipped: not the scheduled update hour"
+fi
diff --git a/update_report_data.py b/update_report_data.py
index 36b8965..7ae8293 100644
--- a/update_report_data.py
+++ b/update_report_data.py
@@ -23,6 +23,8 @@ CSV_URL = (
 )
 TIMEZONE = ZoneInfo("Asia/Shanghai")
 COUNTRIES = ["KZ", "UZ", "KG", "AM"]
+# 平台只支持“每隔几小时”，因此按小时调度，仅在此时刻真正更新（Asia/Shanghai）
+UPDATE_HOUR = 11
 
 DATE_HEADERS = {"date"}
 GEO_HEADERS = {"geo", "country"}
@@ -243,12 +245,19 @@ def build_payload(rows, now):
 
 def main():
     if len(sys.argv) < 2:
-        raise SystemExit("用法: update_report_data.py <输出文件>")
+        raise SystemExit("用法: update_report_data.py <输出文件> [--force]")
+
+    now = datetime.now(TIMEZONE)
+    forced = "--force" in sys.argv[2:]
+    if not forced and now.hour != UPDATE_HOUR:
+        print(f"SKIP {now:%Y-%m-%d %H:%M} 非 {UPDATE_HOUR}:00（Asia/Shanghai），不更新")
+        return
+
     request = urllib.request.Request(CSV_URL, headers={"User-Agent": "AgentStage-Ozon-Report/2.0"})
     with urllib.request.urlopen(request, timeout=90) as response:
         text = response.read().decode("utf-8-sig")
     rows = list(csv.reader(text.splitlines()))
-    payload = build_payload(rows, datetime.now(TIMEZONE))
+    payload = build_payload(rows, now)
     with open(sys.argv[1], "w", encoding="utf-8") as handle:
         json.dump(payload, handle, ensure_ascii=False, indent=2)
     period = payload["period"]