diff --git a/init.sql b/init.sql
index 4a30e6a..3b04f1b 100644
--- a/init.sql
+++ b/init.sql
@@ -23,4 +23,7 @@ CREATE INDEX idx_logs_service_time ON app_logs(service_name, created_at);
 -- create_next_month.sql
 -- 这里的日期逻辑需要通过外部脚本（Python/Shell）动态生成 SQL 语句
 CREATE TABLE IF NOT EXISTS app_logs_2026_01 PARTITION OF app_logs
-    FOR VALUES FROM ('2026-01-01') TO ('2026-02-01');
\ No newline at end of file
+    FOR VALUES FROM ('2026-01-01') TO ('2026-02-01');
+
+ALTER TABLE app_logs ADD COLUMN trace_id VARCHAR(64);
+CREATE INDEX idx_logs_trace_id ON app_logs(trace_id); -- 加上索引，查问题全靠它
\ No newline at end of file
diff --git a/src/context.rs b/src/context.rs
new file mode 100644
index 0000000..b080c13
--- /dev/null
+++ b/src/context.rs
@@ -0,0 +1,16 @@
+// src/context.rs
+use tokio::task_local;
+
+// 定义一个 Tokio 任务局部变量
+task_local! {
+    pub static TRACE_ID: String;
+}
+
+// 辅助函数：设置 TraceID 作用域
+// 在这个 scope 闭包内运行的所有代码，都能访问到这个 ID
+pub async fn with_trace_id<F, R>(id: String, f: F) -> R
+where
+    F: std::future::Future<Output = R>,
+{
+    TRACE_ID.scope(id, f).await
+}
diff --git a/src/core.rs b/src/core.rs
index 631b876..56ac9f3 100644
--- a/src/core.rs
+++ b/src/core.rs
@@ -1,4 +1,5 @@
 // src/core.rs
+use crate::context::TRACE_ID;
 use crate::model::{LogLevel, LogRecord};
 use crate::outputs::LogOutput;
 use chrono::Utc;
@@ -56,6 +57,8 @@ impl Logger {
             return;
         }
 
+        let trace_id = TRACE_ID.try_with(|id| id.clone()).ok();
+
         // 2. 构造记录
         let record = LogRecord {
             service_name: self.service_name.clone(),
@@ -63,6 +66,7 @@ impl Logger {
             level,
             message,
             module,
+            trace_id,
         };
 
         // 3. 发送 (非阻塞，如果队列满则丢弃，防止拖死业务)
diff --git a/src/lib.rs b/src/lib.rs
index 29f77f7..5af9021 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -4,6 +4,7 @@ pub mod core;
 pub mod model;
 pub mod outputs;
 pub use cleaner::LogCleaner;
+pub mod context;
 
 use crate::core::Logger;
 use once_cell::sync::OnceCell;
diff --git a/src/model.rs b/src/model.rs
index dc5ef2a..ce3b371 100644
--- a/src/model.rs
+++ b/src/model.rs
@@ -34,4 +34,5 @@ pub struct LogRecord {
     pub level: LogLevel,
     pub message: String,
     pub module: String,
+    pub trace_id: Option<String>,
 }
diff --git a/src/outputs/file.rs b/src/outputs/file.rs
index 7688a2f..37be2af 100644
--- a/src/outputs/file.rs
+++ b/src/outputs/file.rs
@@ -110,10 +110,16 @@ impl LogOutput for FileOutput {
             return;
         }
 
+        let trace_part = match &record.trace_id {
+            Some(id) => format!("[{}] ", id),
+            None => "".to_string(),
+        };
+
         let log_line = format!(
-            "{} [{}] - {}\n",
+            "{} [{}] {}- {}\n",
             record.timestamp.format("%Y-%m-%d %H:%M:%S%.3f"),
             record.level,
+            trace_part,
             record.message
         );
 
diff --git a/src/outputs/postgres.rs b/src/outputs/postgres.rs
index 07e92c0..1ec9b7c 100644
--- a/src/outputs/postgres.rs
+++ b/src/outputs/postgres.rs
@@ -85,8 +85,8 @@ impl LogOutput for PostgresOutput {
         self.ensure_partition_exists(&record.timestamp).await;
 
         let query = r#"
-            INSERT INTO app_logs (service_name, log_level, message, module, created_at)
-            VALUES ($1, $2, $3, $4, $5)
+            INSERT INTO app_logs (service_name, log_level, message, module, created_at, trace_id)
+            VALUES ($1, $2, $3, $4, $5, $6)
         "#;
 
         // 注意：这里的 write 是在后台任务中执行的，就算慢也不会阻塞主业务
@@ -98,6 +98,7 @@ impl LogOutput for PostgresOutput {
             .bind(&record.message)
             .bind(&record.module)
             .bind(record.timestamp)
+            .bind(&record.trace_id)
             .execute(&self.pool)
             .await
         {