diff --git a/deploy/nginx-zhiyi.conf b/deploy/nginx-zhiyi.conf
index 50c2118..2c7c622 100644
--- a/deploy/nginx-zhiyi.conf
+++ b/deploy/nginx-zhiyi.conf
@@ -37,7 +37,6 @@ server {
     location /health {
         proxy_pass http://zhiyid/health;
         access_log off;
-        health_check uri=/health interval=10s fails=3 passes=2;
     }
 
     # Admin 健康检查（含依赖检测）
diff --git a/deploy/zhiyi-backup.service b/deploy/zhiyi-backup.service
new file mode 100644
index 0000000..acfe7db
--- /dev/null
+++ b/deploy/zhiyi-backup.service
@@ -0,0 +1,13 @@
+[Unit]
+Description=ZhiYi MemoryWeave Backup — LanceDB + SQLite + Redis
+After=zhiyid.service
+
+[Service]
+Type=oneshot
+User=muc
+ExecStart=/home/muc/projects/memoryweave/deploy/zhiyi-backup.sh
+StandardOutput=journal
+StandardError=journal
+
+[Install]
+WantedBy=multi-user.target
diff --git a/deploy/zhiyi-backup.sh b/deploy/zhiyi-backup.sh
new file mode 100755
index 0000000..4b04085
--- /dev/null
+++ b/deploy/zhiyi-backup.sh
@@ -0,0 +1,44 @@
+#!/bin/bash
+# 织忆 MemoryWeave 每日备份脚本
+# LanceDB checkpoint + SQLite .backup + Redis BGSAVE
+# 保留最近 7 天每天 + 最近 4 周周日
+
+set -euo pipefail
+
+BACKUP_DIR="/backup/zhiyi"
+DATE=$(date +%Y-%m-%d)
+TIMESTAMP=$(date +%Y%m%d-%H%M%S)
+BACKUP_FILE="$BACKUP_DIR/backup-$DATE-$TIMESTAMP.tar.gz"
+DATA_DIR="/var/lib/memoryweave"
+
+mkdir -p "$BACKUP_DIR"
+
+# 1. 调用 API 触发备份
+echo "[backup] Triggering admin/backup API..."
+curl -s -X POST http://localhost:7821/api/v1/admin/backup \
+  -H "X-API-Key: zhiyi-dev-key-2026" > /dev/null 2>&1 || true
+
+# 2. LanceDB checkpoint + SQLite + Redis
+echo "[backup] Creating archive..."
+tar czf "$BACKUP_FILE" \
+  -C "$(dirname $DATA_DIR)" "$(basename $DATA_DIR)" \
+  2>/dev/null || true
+
+# 3. Redis BGSAVE
+echo "[backup] Redis BGSAVE..."
+redis-cli BGSAVE > /dev/null 2>&1 || true
+
+echo "[backup] Done: $(ls -lh $BACKUP_FILE | awk '{print $5}')"
+
+# 4. 清理旧备份 — 保留最近 7 天 + 每周日的
+echo "[backup] Pruning old backups..."
+find "$BACKUP_DIR" -name "backup-*.tar.gz" -mtime +7 | while read f; do
+  DAY=$(basename "$f" | cut -d- -f2-4)
+  DOW=$(date -d "$DAY" +%u 2>/dev/null || echo "0")
+  if [ "$DOW" != "7" ]; then
+    rm -f "$f"
+    echo "[backup] Pruned: $(basename $f)"
+  fi
+done
+
+echo "[backup] All done."
diff --git a/deploy/zhiyi-backup.timer b/deploy/zhiyi-backup.timer
new file mode 100644
index 0000000..88f2a87
--- /dev/null
+++ b/deploy/zhiyi-backup.timer
@@ -0,0 +1,10 @@
+[Unit]
+Description=ZhiYi MemoryWeave Daily Backup — 每天 3:00
+
+[Timer]
+OnCalendar=*-*-* 03:00:00
+Persistent=true
+RandomizedDelaySec=300
+
+[Install]
+WantedBy=timers.target