diff --git a/server/migrations/000001_init_schema.up.sql b/server/migrations/000001_init_schema.up.sql
index 8400ce2..1e9de64 100644
--- a/server/migrations/000001_init_schema.up.sql
+++ b/server/migrations/000001_init_schema.up.sql
@@ -55,9 +55,9 @@ CREATE TABLE IF NOT EXISTS tweets (
     created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
 );
 
-CREATE INDEX idx_tweets_x_tweet_id ON tweets(x_tweet_id);
-CREATE INDEX idx_tweets_heat_score ON tweets(heat_score DESC);
-CREATE INDEX idx_tweets_crawl_queue ON tweets(crawl_queue, last_crawled_at);
+CREATE INDEX IF NOT EXISTS idx_tweets_x_tweet_id ON tweets(x_tweet_id);
+CREATE INDEX IF NOT EXISTS idx_tweets_heat_score ON tweets(heat_score DESC);
+CREATE INDEX IF NOT EXISTS idx_tweets_crawl_queue ON tweets(crawl_queue, last_crawled_at);
 
 -- generated_replies 表：生成的 AI 评论记录
 CREATE TABLE IF NOT EXISTS generated_replies (
@@ -71,8 +71,8 @@ CREATE TABLE IF NOT EXISTS generated_replies (
     created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
 );
 
-CREATE INDEX idx_generated_replies_user_id ON generated_replies(user_id);
-CREATE INDEX idx_generated_replies_tweet_id ON generated_replies(tweet_id);
+CREATE INDEX IF NOT EXISTS idx_generated_replies_user_id ON generated_replies(user_id);
+CREATE INDEX IF NOT EXISTS idx_generated_replies_tweet_id ON generated_replies(tweet_id);
 
 -- reply_performance 表：针对已发布评论的效果数据回拨
 CREATE TABLE IF NOT EXISTS reply_performance (
@@ -85,8 +85,8 @@ CREATE TABLE IF NOT EXISTS reply_performance (
     check_time TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
 );
 
-CREATE INDEX idx_reply_performance_reply_id ON reply_performance(reply_id);
-CREATE INDEX idx_reply_performance_user_id ON reply_performance(user_id);
+CREATE INDEX IF NOT EXISTS idx_reply_performance_reply_id ON reply_performance(reply_id);
+CREATE INDEX IF NOT EXISTS idx_reply_performance_user_id ON reply_performance(user_id);
 
 -- ====================================================
 -- 新增表 (v1.1)
@@ -106,8 +106,8 @@ CREATE TABLE IF NOT EXISTS api_usage_logs (
     created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
 );
 
-CREATE INDEX idx_api_usage_logs_user_id ON api_usage_logs(user_id);
-CREATE INDEX idx_api_usage_logs_created_at ON api_usage_logs(created_at DESC);
+CREATE INDEX IF NOT EXISTS idx_api_usage_logs_user_id ON api_usage_logs(user_id);
+CREATE INDEX IF NOT EXISTS idx_api_usage_logs_created_at ON api_usage_logs(created_at DESC);
 
 -- subscriptions 表：用户订阅记录（支付历史）
 CREATE TABLE IF NOT EXISTS subscriptions (
@@ -122,8 +122,8 @@ CREATE TABLE IF NOT EXISTS subscriptions (
     created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
 );
 
-CREATE INDEX idx_subscriptions_user_id ON subscriptions(user_id);
-CREATE INDEX idx_subscriptions_status ON subscriptions(status);
+CREATE INDEX IF NOT EXISTS idx_subscriptions_user_id ON subscriptions(user_id);
+CREATE INDEX IF NOT EXISTS idx_subscriptions_status ON subscriptions(status);
 
 -- user_style_profiles 表：用户风格画像（用于个性化 Prompt）
 CREATE TABLE IF NOT EXISTS user_style_profiles (
@@ -147,7 +147,7 @@ CREATE TABLE IF NOT EXISTS crawl_snapshots (
     created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP
 );
 
-CREATE INDEX idx_crawl_snapshots_created_at ON crawl_snapshots(created_at DESC);
+CREATE INDEX IF NOT EXISTS idx_crawl_snapshots_created_at ON crawl_snapshots(created_at DESC);
 
 -- ====================================================
 -- 新增表 (v1.2) — 用户可配置系统
@@ -191,7 +191,7 @@ CREATE TABLE IF NOT EXISTS user_custom_strategies (
     UNIQUE (user_id, strategy_key)
 );
 
-CREATE INDEX idx_user_custom_strategies_user_id ON user_custom_strategies(user_id);
+CREATE INDEX IF NOT EXISTS idx_user_custom_strategies_user_id ON user_custom_strategies(user_id);
 
 -- competitor_monitors 表：竞品品牌监控（复用后端雷达，按品牌词自动抓取）
 CREATE TABLE IF NOT EXISTS competitor_monitors (
@@ -204,7 +204,7 @@ CREATE TABLE IF NOT EXISTS competitor_monitors (
     UNIQUE (user_id, brand_name)
 );
 
-CREATE INDEX idx_competitor_monitors_user_id ON competitor_monitors(user_id);
+CREATE INDEX IF NOT EXISTS idx_competitor_monitors_user_id ON competitor_monitors(user_id);
 
 -- ====================================================
 -- 触发器：自动更新 updated_at
@@ -219,12 +219,20 @@ END;
 $$ language 'plpgsql';
 
 -- 为所有需要追踪更新时间的表添加触发器
-CREATE TRIGGER update_users_modtime
-    BEFORE UPDATE ON users
-    FOR EACH ROW
-    EXECUTE FUNCTION update_modified_column();
+DO $$ BEGIN
+  IF NOT EXISTS (SELECT 1 FROM pg_trigger WHERE tgname = 'update_users_modtime') THEN
+    CREATE TRIGGER update_users_modtime
+        BEFORE UPDATE ON users
+        FOR EACH ROW
+        EXECUTE FUNCTION update_modified_column();
+  END IF;
+END $$;
 
-CREATE TRIGGER update_user_style_profiles_modtime
-    BEFORE UPDATE ON user_style_profiles
-    FOR EACH ROW
-    EXECUTE FUNCTION update_modified_column();
+DO $$ BEGIN
+  IF NOT EXISTS (SELECT 1 FROM pg_trigger WHERE tgname = 'update_user_style_profiles_modtime') THEN
+    CREATE TRIGGER update_user_style_profiles_modtime
+        BEFORE UPDATE ON user_style_profiles
+        FOR EACH ROW
+        EXECUTE FUNCTION update_modified_column();
+  END IF;
+END $$;