diff --git a/scripts/nas_sync/sync_parquet.sh b/scripts/nas_sync/sync_parquet.sh
index 0cd69fc..e6913b6 100644
--- a/scripts/nas_sync/sync_parquet.sh
+++ b/scripts/nas_sync/sync_parquet.sh
@@ -11,11 +11,19 @@ LOG=/volume1/stock/sanguo_vnpy_v2/data_backup/parquet.log
 echo "=== parquet scp start $(date) ===" >> "$LOG"
 cd "$DATA" || { echo "cd fail" >> "$LOG"; exit 1; }
 
-# scp -r 覆盖式拉取（scp 无断点续传，已传文件会重传；6.24GB 全量约 70min）
-scp -r -i "$KEY" -o StrictHostKeyChecking=no \
-  "$VPS:C:/sanguo_vnpy_v2/data/static" \
-  "$VPS:C:/sanguo_vnpy_v2/data/valuation_baostock" ./ >> "$LOG" 2>&1
-echo "SCP_RC=$? $(date)" >> "$LOG"
+# scp -r 覆盖式拉取（6.24GB 全量约 70min；ServerAliveInterval 保活防跨公网 broken pipe + retry 兜底）
+SCP_OK=0
+for attempt in 1 2 3; do
+  if scp -r -i "$KEY" -o StrictHostKeyChecking=no -o ServerAliveInterval=30 -o ServerAliveCountMax=20 \
+    "$VPS:C:/sanguo_vnpy_v2/data/static" \
+    "$VPS:C:/sanguo_vnpy_v2/data/valuation_baostock" ./ >> "$LOG" 2>&1; then
+    SCP_OK=1
+    break
+  fi
+  echo "[$(date '+%T')] scp attempt $attempt broken pipe, retry..." >> "$LOG"
+  sleep 10
+done
+echo "SCP_RC OK=$SCP_OK $(date)" >> "$LOG"
 
 du -sh "$DATA/static" "$DATA/valuation_baostock" >> "$LOG" 2>&1
 echo "PARQUET_DONE $(date)" >> "$LOG"