diff --git a/backend-rewrite-tasklist/01_M0_M2_FOUNDATION_AND_AUTH.md b/backend-rewrite-tasklist/01_M0_M2_FOUNDATION_AND_AUTH.md
index 26ac9b06..23b24b41 100644
--- a/backend-rewrite-tasklist/01_M0_M2_FOUNDATION_AND_AUTH.md
+++ b/backend-rewrite-tasklist/01_M0_M2_FOUNDATION_AND_AUTH.md
@@ -94,7 +94,8 @@
   交付物：[../server-rs/apps/api-server/src/main.rs](../server-rs/apps/api-server/src/main.rs)
 - [x] 接入统一配置加载
   交付物：[../server-rs/apps/api-server/src/config.rs](../server-rs/apps/api-server/src/config.rs)
-- [ ] 接入统一日志与 tracing
+- [x] 接入统一日志与 tracing
+  交付物：[../server-rs/apps/api-server/src/logging.rs](../server-rs/apps/api-server/src/logging.rs)、[../server-rs/apps/api-server/src/app.rs](../server-rs/apps/api-server/src/app.rs)、[../server-rs/apps/api-server/src/main.rs](../server-rs/apps/api-server/src/main.rs)
 - [ ] 接入 `request_id` 中间件
 - [ ] 接入统一错误处理中间件
 - [ ] 接入当前项目兼容的 response envelope
diff --git a/server-rs/Cargo.lock b/server-rs/Cargo.lock
index a0c31918..e0111c81 100644
--- a/server-rs/Cargo.lock
+++ b/server-rs/Cargo.lock
@@ -2,12 +2,24 @@
 # It is not intended for manual editing.
 version = 4
 
+[[package]]
+name = "aho-corasick"
+version = "1.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ddd31a130427c27518df266943a5308ed92d4b226cc639f5a8f1002816174301"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "api-server"
 version = "0.1.0"
 dependencies = [
  "axum",
  "tokio",
+ "tower-http",
+ "tracing",
+ "tracing-subscriber",
 ]
 
 [[package]]
@@ -68,12 +80,24 @@ dependencies = [
  "tracing",
 ]
 
+[[package]]
+name = "bitflags"
+version = "2.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c4512299f36f043ab09a583e57bceb5a5aab7a73db1805848e8fef3c9e8c78b3"
+
 [[package]]
 name = "bytes"
 version = "1.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1e748733b7cbc798e1434b6ac524f0c1ff2ab456fe201501e6497c8417a4fc33"
 
+[[package]]
+name = "cfg-if"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801"
+
 [[package]]
 name = "form_urlencoded"
 version = "1.2.2"
@@ -202,6 +226,12 @@ version = "1.0.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8f42a60cbdf9a97f5d2305f08a87dc4e09308d1276d28c869c684d7777685682"
 
+[[package]]
+name = "lazy_static"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe"
+
 [[package]]
 name = "libc"
 version = "0.2.185"
@@ -214,6 +244,15 @@ version = "0.4.29"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5e5032e24019045c762d3c0f28f5b6b8bbf38563a65908389bf7978758920897"
 
+[[package]]
+name = "matchers"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d1525a2a28c7f4fa0fc98bb91ae755d1e2d1505079e05539e35bc876b5d65ae9"
+dependencies = [
+ "regex-automata",
+]
+
 [[package]]
 name = "matchit"
 version = "0.8.4"
@@ -243,6 +282,15 @@ dependencies = [
  "windows-sys",
 ]
 
+[[package]]
+name = "nu-ansi-term"
+version = "0.50.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7957b9740744892f114936ab4a57b3f487491bbeafaf8083688b16841a4240e5"
+dependencies = [
+ "windows-sys",
+]
+
 [[package]]
 name = "once_cell"
 version = "1.21.4"
@@ -279,6 +327,23 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "regex-automata"
+version = "0.4.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6e1dd4122fc1595e8162618945476892eefca7b88c52820e74af6262213cae8f"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-syntax"
+version = "0.8.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dc897dd8d9e8bd1ed8cdad82b5966c3e0ecae09fb1907d58efaa013543185d0a"
+
 [[package]]
 name = "ryu"
 version = "1.0.23"
@@ -350,6 +415,15 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "sharded-slab"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f40ca3c46823713e0d4209592e8d6e826aa57e928f09752619fc696c499637f6"
+dependencies = [
+ "lazy_static",
+]
+
 [[package]]
 name = "slab"
 version = "0.4.12"
@@ -389,6 +463,15 @@ version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0bf256ce5efdfa370213c1dabab5935a12e49f2c58d15e9eac2870d3b4f27263"
 
+[[package]]
+name = "thread_local"
+version = "1.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f60246a4944f24f6e018aa17cdeffb7818b76356965d03b07d6a9886e8962185"
+dependencies = [
+ "cfg-if",
+]
+
 [[package]]
 name = "tokio"
 version = "1.52.1"
@@ -430,6 +513,22 @@ dependencies = [
  "tracing",
 ]
 
+[[package]]
+name = "tower-http"
+version = "0.6.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d4e6559d53cc268e5031cd8429d05415bc4cb4aefc4aa5d6cc35fbf5b924a1f8"
+dependencies = [
+ "bitflags",
+ "bytes",
+ "http",
+ "http-body",
+ "pin-project-lite",
+ "tower-layer",
+ "tower-service",
+ "tracing",
+]
+
 [[package]]
 name = "tower-layer"
 version = "0.3.3"
@@ -450,9 +549,21 @@ checksum = "63e71662fa4b2a2c3a26f570f037eb95bb1f85397f3cd8076caed2f026a6d100"
 dependencies = [
  "log",
  "pin-project-lite",
+ "tracing-attributes",
  "tracing-core",
 ]
 
+[[package]]
+name = "tracing-attributes"
+version = "0.1.31"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7490cfa5ec963746568740651ac6781f701c9c5ea257c58e057f3ba8cf69e8da"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "tracing-core"
 version = "0.1.36"
@@ -460,6 +571,36 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "db97caf9d906fbde555dd62fa95ddba9eecfd14cb388e4f491a66d74cd5fb79a"
 dependencies = [
  "once_cell",
+ "valuable",
+]
+
+[[package]]
+name = "tracing-log"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ee855f1f400bd0e5c02d150ae5de3840039a3f54b025156404e34c23c03f47c3"
+dependencies = [
+ "log",
+ "once_cell",
+ "tracing-core",
+]
+
+[[package]]
+name = "tracing-subscriber"
+version = "0.3.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cb7f578e5945fb242538965c2d0b04418d38ec25c79d160cd279bf0731c8d319"
+dependencies = [
+ "matchers",
+ "nu-ansi-term",
+ "once_cell",
+ "regex-automata",
+ "sharded-slab",
+ "smallvec",
+ "thread_local",
+ "tracing",
+ "tracing-core",
+ "tracing-log",
 ]
 
 [[package]]
@@ -468,6 +609,12 @@ version = "1.0.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e6e4313cd5fcd3dad5cafa179702e2b244f760991f45397d14d4ebf38247da75"
 
+[[package]]
+name = "valuable"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ba73ea9cf16a25df0c8caa16c51acb937d5712a8429db78a3ee29d5dcacd3a65"
+
 [[package]]
 name = "wasi"
 version = "0.11.1+wasi-snapshot-preview1"
diff --git a/server-rs/apps/api-server/Cargo.toml b/server-rs/apps/api-server/Cargo.toml
index 52f6578d..972d07eb 100644
--- a/server-rs/apps/api-server/Cargo.toml
+++ b/server-rs/apps/api-server/Cargo.toml
@@ -7,3 +7,6 @@ license.workspace = true
 [dependencies]
 axum = "0.8"
 tokio = { version = "1", features = ["macros", "rt-multi-thread", "net"] }
+tower-http = { version = "0.6", features = ["trace"] }
+tracing = "0.1"
+tracing-subscriber = { version = "0.3", features = ["env-filter", "fmt"] }
diff --git a/server-rs/apps/api-server/README.md b/server-rs/apps/api-server/README.md
index 35ff7b5e..eaea891e 100644
--- a/server-rs/apps/api-server/README.md
+++ b/server-rs/apps/api-server/README.md
@@ -22,14 +22,22 @@
 4. `src/app.rs`
 5. `src/state.rs`
 6. `src/config.rs`
+7. `src/logging.rs`
+8. 基础 `TraceLayer` 挂载与 `tracing subscriber` 初始化
 
 后续与本 package 直接相关的任务包括：
 
-1. 接入统一日志与 tracing
-2. 接入 `request_id`
-3. 接入统一错误处理中间件
-4. 接入 response envelope
-5. 接入 `/healthz`
+1. [x] 接入统一日志与 tracing
+2. [ ] 接入 `request_id`
+3. [ ] 接入统一错误处理中间件
+4. [ ] 接入 response envelope
+5. [ ] 接入 `/healthz`
+
+当前 tracing 约定：
+
+1. 进程启动时统一初始化 `tracing subscriber`。
+2. 默认日志过滤器来自 `GENARRATIVE_API_LOG`，未提供时回落到 `info,tower_http=info`。
+3. HTTP 访问日志统一通过 Axum 路由层的 `TraceLayer` 输出，后续 `request_id`、响应头与错误中间件继续在同一层扩展。
 
 ## 3. 边界约束
 
diff --git a/server-rs/apps/api-server/src/app.rs b/server-rs/apps/api-server/src/app.rs
index f63bf81d..55a8d29c 100644
--- a/server-rs/apps/api-server/src/app.rs
+++ b/server-rs/apps/api-server/src/app.rs
@@ -1,8 +1,19 @@
 use axum::Router;
+use tower_http::trace::{DefaultMakeSpan, DefaultOnFailure, DefaultOnRequest, DefaultOnResponse, TraceLayer};
+use tracing::Level;
 
 use crate::state::AppState;
 
 // 统一由这里构造 Axum 路由树，后续再逐项挂接中间件与业务路由。
 pub fn build_router(state: AppState) -> Router {
-    Router::new().with_state(state)
+    Router::new()
+        // 当前阶段先统一挂接 HTTP tracing，后续 request_id、响应头与错误中间件继续在这里扩展。
+        .layer(
+            TraceLayer::new_for_http()
+                .make_span_with(DefaultMakeSpan::new().level(Level::INFO))
+                .on_request(DefaultOnRequest::new().level(Level::INFO))
+                .on_response(DefaultOnResponse::new().level(Level::INFO))
+                .on_failure(DefaultOnFailure::new().level(Level::ERROR)),
+        )
+        .with_state(state)
 }
diff --git a/server-rs/apps/api-server/src/config.rs b/server-rs/apps/api-server/src/config.rs
index 2807ce31..df637ad9 100644
--- a/server-rs/apps/api-server/src/config.rs
+++ b/server-rs/apps/api-server/src/config.rs
@@ -5,6 +5,7 @@ use std::{env, net::SocketAddr};
 pub struct AppConfig {
     pub bind_host: String,
     pub bind_port: u16,
+    pub log_filter: String,
 }
 
 impl Default for AppConfig {
@@ -12,6 +13,7 @@ impl Default for AppConfig {
         Self {
             bind_host: "127.0.0.1".to_string(),
             bind_port: 3000,
+            log_filter: "info,tower_http=info".to_string(),
         }
     }
 }
@@ -32,6 +34,12 @@ impl AppConfig {
             }
         }
 
+        if let Ok(log_filter) = env::var("GENARRATIVE_API_LOG") {
+            if !log_filter.trim().is_empty() {
+                config.log_filter = log_filter;
+            }
+        }
+
         config
     }
 
diff --git a/server-rs/apps/api-server/src/logging.rs b/server-rs/apps/api-server/src/logging.rs
new file mode 100644
index 00000000..f1acce0c
--- /dev/null
+++ b/server-rs/apps/api-server/src/logging.rs
@@ -0,0 +1,19 @@
+use std::io;
+
+use tracing_subscriber::{fmt, EnvFilter};
+
+use crate::config::AppConfig;
+
+// 统一在独立模块初始化 tracing，避免入口层和后续测试入口重复散落 subscriber 配置。
+pub fn init_tracing(config: &AppConfig) -> Result<(), io::Error> {
+    let env_filter = EnvFilter::try_from_default_env()
+        .or_else(|_| EnvFilter::try_new(config.log_filter.as_str()))
+        .unwrap_or_else(|_| EnvFilter::new("info"));
+
+    fmt()
+        .with_env_filter(env_filter)
+        .with_target(true)
+        .compact()
+        .try_init()
+        .map_err(|error| io::Error::other(format!("初始化 tracing subscriber 失败：{error}")))
+}
diff --git a/server-rs/apps/api-server/src/main.rs b/server-rs/apps/api-server/src/main.rs
index 0cab5b62..b2a3d240 100644
--- a/server-rs/apps/api-server/src/main.rs
+++ b/server-rs/apps/api-server/src/main.rs
@@ -1,20 +1,26 @@
 mod app;
 mod config;
+mod logging;
 mod state;
 
 use tokio::net::TcpListener;
+use tracing::info;
 
-use crate::{app::build_router, config::AppConfig, state::AppState};
+use crate::{app::build_router, config::AppConfig, logging::init_tracing, state::AppState};
 
 #[tokio::main]
 async fn main() -> Result<(), std::io::Error> {
     // 统一先从配置对象读取监听地址，避免后续把环境变量读取散落到入口和路由层。
     let config = AppConfig::from_env();
+    init_tracing(&config)?;
+
     let bind_address = config.bind_socket_addr();
     let listener = TcpListener::bind(bind_address).await?;
 
     let state = AppState::new(config);
     let router = build_router(state);
 
+    info!(%bind_address, "api-server 已完成 tracing 初始化并开始监听");
+
     axum::serve(listener, router).await
 }