diff --git a/trading_system/config.py b/trading_system/config.py
index fbe1373..3d910bc 100644
--- a/trading_system/config.py
+++ b/trading_system/config.py
@@ -220,8 +220,11 @@ DEFAULT_TRADING_CONFIG = {
     'SCAN_LIMIT_KLINE_SUBSCRIBE': True,  # 限制 K 线订阅：只在缓存完全没有数据时才订阅，避免订阅过多导致负载上升
     # 多账号/低配服务器（如 2 CPU 4G）：降低并发与错峰扫描，避免 CPU 打满
     'SCAN_CONCURRENT_SYMBOLS': 2,  # 扫描时同时分析多少个交易对（2 CPU 4G 多账号建议 2，单账号可 3～5）
-    'SCAN_STAGGER_BY_ACCOUNT': True,  # 多账号时按 account_id 错峰首次扫描，避免多进程同时扫
-    'SCAN_STAGGER_SEC': 60,  # 每多一个账号延迟的秒数（account_id-1 * 此值），如 4 账号则 0/60/120/180 秒后开扫
+    'SCAN_STAGGER_BY_ACCOUNT': True,  # 多账号时错峰首次扫描，避免多进程同时扫
+    'SCAN_STAGGER_RANDOM': True,  # True=随机延迟(更分散)，False=按 account_id 固定步长延迟
+    'SCAN_STAGGER_MIN_SEC': 10,  # 随机延迟下限（秒）
+    'SCAN_STAGGER_MAX_SEC': 120,  # 随机延迟上限（秒）
+    'SCAN_STAGGER_SEC': 60,  # 非随机模式下每账号步长（account_id-1 * 此值）
     'KLINE_INTERVAL': '1h',
     'PRIMARY_INTERVAL': '4h',  # 主周期4小时，过滤噪音
     'CONFIRM_INTERVAL': '1d',  # 确认周期日线，看大趋势
diff --git a/trading_system/strategy.py b/trading_system/strategy.py
index 646e972..3553b8b 100644
--- a/trading_system/strategy.py
+++ b/trading_system/strategy.py
@@ -78,13 +78,23 @@ class TradingStrategy:
 
         # 多账号错峰：避免多进程同时扫描导致 CPU 打满（2 CPU 4G 等低配服务器）
         import os
+        import random
         stagger_enabled = config.TRADING_CONFIG.get('SCAN_STAGGER_BY_ACCOUNT', False)
-        stagger_sec = int(config.TRADING_CONFIG.get('SCAN_STAGGER_SEC', 60) or 60)
+        stagger_random = config.TRADING_CONFIG.get('SCAN_STAGGER_RANDOM', True)
         account_id = int(os.getenv('ATS_ACCOUNT_ID') or os.getenv('ACCOUNT_ID') or 1)
-        if stagger_enabled and account_id > 1 and stagger_sec > 0:
-            delay = (account_id - 1) * stagger_sec
-            logger.info(f"多账号错峰：account_id={account_id}，延迟 {delay} 秒后开始首次扫描")
-            await asyncio.sleep(delay)
+        if stagger_enabled:
+            if stagger_random:
+                min_sec = max(0, int(config.TRADING_CONFIG.get('SCAN_STAGGER_MIN_SEC', 10) or 10))
+                max_sec = max(min_sec, int(config.TRADING_CONFIG.get('SCAN_STAGGER_MAX_SEC', 120) or 120))
+                delay = random.randint(min_sec, max_sec)
+                logger.info(f"多账号错峰：account_id={account_id}，随机延迟 {delay} 秒后开始首次扫描（范围 {min_sec}～{max_sec}s）")
+            else:
+                stagger_sec = int(config.TRADING_CONFIG.get('SCAN_STAGGER_SEC', 60) or 60)
+                delay = (account_id - 1) * stagger_sec if account_id > 1 else 0
+                if delay > 0:
+                    logger.info(f"多账号错峰：account_id={account_id}，延迟 {delay} 秒后开始首次扫描")
+            if delay > 0:
+                await asyncio.sleep(delay)
 
         try:
             while self.running: