diff --git a/data_platform/daily_all_update.py b/data_platform/daily_all_update.py
index 08089f12..3da6308e 100644
--- a/data_platform/daily_all_update.py
+++ b/data_platform/daily_all_update.py
@@ -387,7 +387,9 @@ def run_daily_update(codes: List[str]) -> dict:
             break
 
         if i > 0:
-            time.sleep(REQUEST_INTERVAL)
+            # 东方财富严格限频：基础间隔4s + 伪随机抖动±1s
+            jitter = (hash(code) % 200 - 100) / 100.0 * EM_JITTER
+            time.sleep(REQUEST_INTERVAL_EM + jitter)
 
         last_date = get_daily_last_date(code)
         if not last_date: