diff --git a/backend/risk_guard.py b/backend/risk_guard.py
index e582431..22cdb95 100644
--- a/backend/risk_guard.py
+++ b/backend/risk_guard.py
@@ -67,7 +67,7 @@ HOLD_TIMEOUT_GRACE_MIN = 10  # 红灯后10分钟人工窗口
 HOLD_TIMEOUT_AUTO_CLOSE_MIN = HOLD_TIMEOUT_RED_MIN + HOLD_TIMEOUT_GRACE_MIN  # 70分钟
 
 # 数据新鲜度
-MARKET_DATA_STALE_SEC = 10
+MARKET_DATA_STALE_SEC = 30  # 30秒(允许signal_engine启动回灌)
 ACCOUNT_UPDATE_STALE_SEC = 20
 
 CHECK_INTERVAL = 5  # 风控检查间隔(秒)
@@ -451,6 +451,19 @@ def check_auto_resume():
             risk_state.circuit_break_reason = None
             write_risk_state()
 
+    # 数据新鲜度恢复（熔断原因含"数据异常"且当前数据已恢复新鲜）
+    if (risk_state.circuit_break_reason
+            and "数据异常" in risk_state.circuit_break_reason
+            and "人工" not in risk_state.circuit_break_reason):
+        # 检查数据是否已恢复
+        api_gap = now - risk_state.last_api_success
+        if api_gap < 10:
+            logger.info("✅ 数据新鲜度恢复，自动恢复交易")
+            risk_state.status = "normal"
+            risk_state.block_new_entries = False
+            risk_state.circuit_break_reason = None
+            write_risk_state()
+
 
 # ============ 前端紧急指令处理 ============