diff --git a/scripts/migrate-prod-to-dev.sh b/scripts/migrate-prod-to-dev.sh
new file mode 100755
index 0000000..09871e3
--- /dev/null
+++ b/scripts/migrate-prod-to-dev.sh
@@ -0,0 +1,113 @@
+#!/bin/bash
+# ===========================================
+# 数据迁移脚本: milkydata → milkydata_dev
+# 用途: 将生产库 milkydata 的数据迁移到 milkydata_dev
+# 自动处理列名差异 (is_paid → is_member, paid_expires_at → membership_expires_at)
+# 注意: 目标库 milkydata_dev 中已存在的数据会被清空
+# ===========================================
+
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+PROJECT_ROOT="$(dirname "$SCRIPT_DIR")"
+
+DB_CONTAINER="1Panel-postgresql-FtMo"
+DB_USER="milkydata"
+SRC_DB="milkydata"
+DST_DB="milkydata_dev"
+BACKUP_DIR="${PROJECT_ROOT}/backups"
+
+mkdir -p "$BACKUP_DIR"
+LOG_FILE="${BACKUP_DIR}/migration_$(date +%Y%m%d_%H%M%S).log"
+
+log() { echo "[$(date '+%H:%M:%S')] $1" | tee -a "$LOG_FILE"; }
+
+echo "═══════════════════════════════════════"
+echo "  数据迁移: ${SRC_DB} → ${DST_DB}"
+echo "═══════════════════════════════════════"
+
+# ---------- 步骤 0: 确认 ----------
+echo ""
+echo "源库: ${SRC_DB}"
+docker exec "$DB_CONTAINER" psql -U "$DB_USER" -d "$SRC_DB" -tAc "
+SELECT CONCAT('  users: ', COUNT(*), ' 行') FROM users;
+SELECT CONCAT('  weather_data: ', COUNT(*), ' 行') FROM weather_data;
+SELECT CONCAT('  payment_orders: ', COUNT(*), ' 行') FROM payment_orders;
+"
+echo ""
+echo "目标库: ${DST_DB}（数据将被清空并重新导入）"
+echo ""
+read -p "确认迁移? [y/N] " -n 1 -r; echo
+[[ ! $REPLY =~ ^[Yy]$ ]] && { echo "已取消"; exit 0; }
+
+# ---------- 步骤 1: 备份目标库 ----------
+log "备份目标库 ${DST_DB}..."
+docker exec "$DB_CONTAINER" pg_dump -U "$DB_USER" -d "$DST_DB" -Fc \
+  > "${BACKUP_DIR}/${DST_DB}_pre_migration_$(date +%Y%m%d_%H%M%S).dump" 2>> "$LOG_FILE"
+log "  目标库备份完成 ✅"
+
+# ---------- 步骤 2: 清空目标库 ----------
+log "清空目标库 ${DST_DB}..."
+docker exec "$DB_CONTAINER" psql -U "$DB_USER" -d "$DST_DB" -tAc "
+TRUNCATE weather_data CASCADE;
+TRUNCATE payment_orders CASCADE;
+TRUNCATE notifications CASCADE;
+TRUNCATE payment_audit_log CASCADE;
+DELETE FROM users CASCADE;
+" 2>> "$LOG_FILE"
+log "  清空完成 ✅"
+
+# ---------- 步骤 3: 导出源库数据到 SQL 文件 ----------
+log "导出源库数据..."
+TMP_SQL="/tmp/migrate_$$.sql"
+
+# users 表（列名转换: is_paid → is_member, paid_expires_at → membership_expires_at）
+docker exec "$DB_CONTAINER" pg_dump -U "$DB_USER" -d "$SRC_DB" \
+  --data-only --table=users --column-inserts 2>/dev/null \
+  | grep -v '^--' | grep -v '^$' \
+  | sed 's/ is_paid/ is_member/g' \
+  | sed 's/ paid_expires_at/ membership_expires_at/g' \
+  > "$TMP_SQL"
+log "  users 导出并转换列名 ✅"
+
+# weather_data
+docker exec "$DB_CONTAINER" pg_dump -U "$DB_USER" -d "$SRC_DB" \
+  --data-only --table=weather_data --column-inserts 2>/dev/null \
+  | grep -v '^--' | grep -v '^$' >> "$TMP_SQL"
+log "  weather_data 导出 ✅"
+
+# payment_orders
+docker exec "$DB_CONTAINER" pg_dump -U "$DB_USER" -d "$SRC_DB" \
+  --data-only --table=payment_orders --column-inserts 2>/dev/null \
+  | grep -v '^--' | grep -v '^$' >> "$TMP_SQL"
+log "  payment_orders 导出 ✅"
+
+log "  共 $(wc -l < "$TMP_SQL") 条 SQL 语句"
+
+# ---------- 步骤 4: 导入到目标库 ----------
+log "导入数据到 ${DST_DB}..."
+docker exec -i "$DB_CONTAINER" psql -U "$DB_USER" -d "$DST_DB" < "$TMP_SQL" 2>> "$LOG_FILE"
+log "  导入完成 ✅"
+
+# ---------- 清理 ----------
+rm -f "$TMP_SQL"
+
+# ---------- 验证 ----------
+echo ""
+log "═════════════════════════════════"
+log "迁移完成！源库 vs 目标库数据量："
+log "═════════════════════════════════"
+
+for table in users weather_data payment_orders; do
+  src=$(docker exec "$DB_CONTAINER" psql -U "$DB_USER" -d "$SRC_DB" -tAc "SELECT COUNT(*) FROM ${table};" 2>/dev/null)
+  dst=$(docker exec "$DB_CONTAINER" psql -U "$DB_USER" -d "$DST_DB" -tAc "SELECT COUNT(*) FROM ${table};" 2>/dev/null)
+  status="✅"
+  [ "$src" != "$dst" ] && status="❌ 不匹配!"
+  log "  ${table}: ${src} → ${dst} ${status}"
+done
+
+echo ""
+echo "日志: ${LOG_FILE}"
+echo "备份: ${BACKUP_DIR}/${DST_DB}_pre_migration_*.dump"
+echo ""
+echo "⚠️  如需回滚：gunzip -c ${BACKUP_DIR}/*.dump.gz | docker exec -i ... pg_restore"