diff --git a/lab-39/lab-39-logback/pom.xml b/lab-39/lab-39-logback/pom.xml
index 6f3f4914..56d887e6 100644
--- a/lab-39/lab-39-logback/pom.xml
+++ b/lab-39/lab-39-logback/pom.xml
@@ -14,6 +14,7 @@
     <artifactId>lab-39-logback</artifactId>
 
     <dependencies>
+        <!-- SkyWalking 对 Logback 的集成 -->
         <dependency>
             <groupId>org.apache.skywalking</groupId>
             <artifactId>apm-toolkit-logback-1.x</artifactId>
diff --git a/lab-39/lab-39-logback/src/main/resources/logback-spring.xml b/lab-39/lab-39-logback/src/main/resources/logback-spring.xml
index 268ef241..ea96023e 100644
--- a/lab-39/lab-39-logback/src/main/resources/logback-spring.xml
+++ b/lab-39/lab-39-logback/src/main/resources/logback-spring.xml
@@ -6,12 +6,12 @@
     <include resource="org/springframework/boot/logging/logback/defaults.xml"/>
 
     <!-- 控制台 Appender -->
-    <property name="CONSOLE_LOG_X_PATTERN" value="%clr(%d{${LOG_DATEFORMAT_PATTERN:-yyyy-MM-dd HH:mm:ss.SSS}}){faint} %clr(${LOG_LEVEL_PATTERN:-%5p}) %clr(${PID:- }){magenta} %tid %clr(---){faint} %clr([%15.15t]){faint} %clr(%-40.40logger{39}){cyan} %clr(:){faint} %m%n${LOG_EXCEPTION_CONVERSION_WORD:-%wEx}"/>
+    <property name="CONSOLE_LOG_PATTERN" value="%clr(%d{${LOG_DATEFORMAT_PATTERN:-yyyy-MM-dd HH:mm:ss.SSS}}){faint} %clr(${LOG_LEVEL_PATTERN:-%5p}) %clr(${PID:- }){magenta} %tid %clr(---){faint} %clr([%15.15t]){faint} %clr(%-40.40logger{39}){cyan} %clr(:){faint} %m%n${LOG_EXCEPTION_CONVERSION_WORD:-%wEx}"/>
     <appender name="console" class="ch.qos.logback.core.ConsoleAppender">
         <!-- 日志的格式化 -->
         <encoder class="ch.qos.logback.core.encoder.LayoutWrappingEncoder">
             <layout class="org.apache.skywalking.apm.toolkit.log.logback.v1.x.TraceIdPatternLogbackLayout">
-                <Pattern>${CONSOLE_LOG_X_PATTERN}</Pattern>
+                <Pattern>${CONSOLE_LOG_PATTERN}</Pattern>
             </layout>
         </encoder>
     </appender>
@@ -31,9 +31,10 @@
             <maxFileSize>10MB</maxFileSize>
         </rollingPolicy>
         <!-- 日志的格式化 -->
-        <encoder>
-            <pattern>${FILE_LOG_PATTERN}</pattern>
-            <charset>utf8</charset>
+        <encoder class="ch.qos.logback.core.encoder.LayoutWrappingEncoder">
+            <layout class="org.apache.skywalking.apm.toolkit.log.logback.v1.x.TraceIdPatternLogbackLayout">
+                <Pattern>${FILE_LOG_PATTERN}</Pattern>
+            </layout>
         </encoder>
     </appender>
 
diff --git a/lab-39/lab-39-trace-annotations/pom.xml b/lab-39/lab-39-trace-annotations/pom.xml
new file mode 100644
index 00000000..a3ca1e63
--- /dev/null
+++ b/lab-39/lab-39-trace-annotations/pom.xml
@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>2.2.2.RELEASE</version>
+        <relativePath/> <!-- lookup parent from repository -->
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+    <packaging>jar</packaging>
+
+    <artifactId>lab-39-trace-annotations</artifactId>
+
+    <dependencies>
+        <!-- SkyWalking 工具类 -->
+        <dependency>
+            <groupId>org.apache.skywalking</groupId>
+            <artifactId>apm-toolkit-trace</artifactId>
+            <version>6.6.0</version>
+        </dependency>
+
+        <!-- 实现对 SpringMVC 的自动化配置 -->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+    </dependencies>
+
+</project>
diff --git a/lab-39/lab-39-trace-annotations/src/main/java/cn/iocoder/springboot/lab39/skywalkingdemo/TraceAnnotationsApplication.java b/lab-39/lab-39-trace-annotations/src/main/java/cn/iocoder/springboot/lab39/skywalkingdemo/TraceAnnotationsApplication.java
new file mode 100644
index 00000000..7a07bc97
--- /dev/null
+++ b/lab-39/lab-39-trace-annotations/src/main/java/cn/iocoder/springboot/lab39/skywalkingdemo/TraceAnnotationsApplication.java
@@ -0,0 +1,13 @@
+package cn.iocoder.springboot.lab39.skywalkingdemo;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class TraceAnnotationsApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(TraceAnnotationsApplication.class, args);
+    }
+
+}
diff --git a/lab-39/lab-39-trace-annotations/src/main/java/cn/iocoder/springboot/lab39/skywalkingdemo/controller/DemoController.java b/lab-39/lab-39-trace-annotations/src/main/java/cn/iocoder/springboot/lab39/skywalkingdemo/controller/DemoController.java
new file mode 100644
index 00000000..5beb0309
--- /dev/null
+++ b/lab-39/lab-39-trace-annotations/src/main/java/cn/iocoder/springboot/lab39/skywalkingdemo/controller/DemoController.java
@@ -0,0 +1,23 @@
+package cn.iocoder.springboot.lab39.skywalkingdemo.controller;
+
+import org.apache.skywalking.apm.toolkit.trace.ActiveSpan;
+import org.apache.skywalking.apm.toolkit.trace.Trace;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/demo")
+public class DemoController {
+
+    @GetMapping("/trace_annotations")
+    @Trace(operationName = "trace_annotations")
+    public String echo() {
+        // 自定义 SkyWalking Span
+        ActiveSpan.tag("mp", "芋道源码");
+
+        // 返回
+        return "trace_annotations";
+    }
+
+}
diff --git a/lab-39/lab-39-trace-annotations/src/main/resources/application.yml b/lab-39/lab-39-trace-annotations/src/main/resources/application.yml
new file mode 100644
index 00000000..396333f0
--- /dev/null
+++ b/lab-39/lab-39-trace-annotations/src/main/resources/application.yml
@@ -0,0 +1,2 @@
+server:
+  port: 8079
diff --git a/lab-39/pom.xml b/lab-39/pom.xml
index d1590612..04289e50 100644
--- a/lab-39/pom.xml
+++ b/lab-39/pom.xml
@@ -24,6 +24,7 @@
         <module>lab-39-rabbitmq-demo</module>
         <module>lab-39-activemq</module>
         <module>lab-39-logback</module>
+        <module>lab-39-trace-annotations</module>
     </modules>
 
 </project>