diff --git a/aioj-backend-ai-service/src/main/java/cn/meowrain/aioj/backend/aiservice/service/impl/AIServiceImpl.java b/aioj-backend-ai-service/src/main/java/cn/meowrain/aioj/backend/aiservice/service/impl/AIServiceImpl.java
new file mode 100644
index 0000000..9f879f2
--- /dev/null
+++ b/aioj-backend-ai-service/src/main/java/cn/meowrain/aioj/backend/aiservice/service/impl/AIServiceImpl.java
@@ -0,0 +1,72 @@
+package cn.meowrain.aioj.backend.aiservice.service.impl;
+
+import cn.meowrain.aioj.backend.aiservice.service.AIService;
+import dev.langchain4j.model.chat.ChatLanguageModel;
+import dev.langchain4j.model.openai.OpenAiChatModel;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Service;
+
+/**
+ * AI 服务实现
+ */
+@Slf4j
+@Service
+@RequiredArgsConstructor
+public class AIServiceImpl implements AIService {
+
+    private final ChatLanguageModel chatLanguageModel;
+
+    @Override
+    public String analyzeCode(String code, String language) {
+        String prompt = buildPrompt("代码分析", language, code,
+                "请分析以下代码的质量、潜在问题和改进建议。");
+        log.info("执行代码分析: language={}, codeLength={}", language, code.length());
+        return chatLanguageModel.generate(prompt);
+    }
+
+    @Override
+    public String optimizeCode(String code, String language) {
+        String prompt = buildPrompt("代码优化", language, code,
+                "请提供以下代码的优化建议，包括性能优化、代码风格改进等。");
+        log.info("执行代码优化: language={}, codeLength={}", language, code.length());
+        return chatLanguageModel.generate(prompt);
+    }
+
+    @Override
+    public String generateTestCases(String code, String language) {
+        String prompt = buildPrompt("测试用例生成", language, code,
+                "请为以下代码生成完整的测试用例，包括边界条件和异常情况。");
+        log.info("生成测试用例: language={}, codeLength={}", language, code.length());
+        return chatLanguageModel.generate(prompt);
+    }
+
+    @Override
+    public String explainCode(String code, String language) {
+        String prompt = buildPrompt("代码解释", language, code,
+                "请详细解释以下代码的功能、逻辑和实现方式。");
+        log.info("解释代码: language={}, codeLength={}", language, code.length());
+        return chatLanguageModel.generate(prompt);
+    }
+
+    /**
+     * 构建提示词
+     */
+    private String buildPrompt(String task, String language, String code, String instruction) {
+        return String.format("""
+                # 任务：%s
+
+                # 编程语言：%s
+
+                # 代码：
+                ```%s
+                %s
+                ```
+
+                # 要求：
+                %s
+
+                请提供详细、准确的分析结果。
+                """, task, language, language, code, instruction);
+    }
+}
diff --git a/aioj-backend-ai-service/src/main/resources/application-dev.yml b/aioj-backend-ai-service/src/main/resources/application-dev.yml
new file mode 100644
index 0000000..12805ed
--- /dev/null
+++ b/aioj-backend-ai-service/src/main/resources/application-dev.yml
@@ -0,0 +1,28 @@
+spring:
+  data:
+    redis:
+      host: 10.0.0.10
+      port: 6379
+      password: 123456
+  datasource:
+    driver-class-name: com.mysql.cj.jdbc.Driver
+    url: jdbc:mysql://10.0.0.10/aioj_dev
+    username: root
+    password: root
+  cloud:
+    nacos:
+      discovery:
+        enabled: true
+        register-enabled: true
+        server-addr: 10.0.0.10:8848
+        username: nacos
+        password: nacos
+
+# AI 服务配置 - 开发环境
+ai:
+  openai:
+    api-key: ${OPENAI_API_KEY:sk-dev-key}
+    base-url: ${OPENAI_BASE_URL:https://api.openai.com}
+    model: gpt-4
+    max-tokens: 2000
+    temperature: 0.7
diff --git a/aioj-backend-ai-service/src/main/resources/application-prod.yml b/aioj-backend-ai-service/src/main/resources/application-prod.yml
new file mode 100644
index 0000000..66ec453
--- /dev/null
+++ b/aioj-backend-ai-service/src/main/resources/application-prod.yml
@@ -0,0 +1,28 @@
+spring:
+  data:
+    redis:
+      host: ${REDIS_HOST:localhost}
+      port: ${REDIS_PORT:6379}
+      password: ${REDIS_PASSWORD}
+  datasource:
+    driver-class-name: com.mysql.cj.jdbc.Driver
+    url: jdbc:mysql://${DB_HOST}:${DB_PORT}/${DB_NAME}
+    username: ${DB_USERNAME}
+    password: ${DB_PASSWORD}
+  cloud:
+    nacos:
+      discovery:
+        enabled: true
+        register-enabled: true
+        server-addr: ${NACOS_ADDR}
+        username: ${NACOS_USERNAME}
+        password: ${NACOS_PASSWORD}
+
+# AI 服务配置 - 生产环境
+ai:
+  openai:
+    api-key: ${OPENAI_API_KEY}
+    base-url: ${OPENAI_BASE_URL:https://api.openai.com}
+    model: ${OPENAI_MODEL:gpt-4}
+    max-tokens: ${OPENAI_MAX_TOKENS:2000}
+    temperature: ${OPENAI_TEMPERATURE:0.7}
diff --git a/aioj-backend-ai-service/src/main/resources/application-test.yml b/aioj-backend-ai-service/src/main/resources/application-test.yml
new file mode 100644
index 0000000..9ba9bc9
--- /dev/null
+++ b/aioj-backend-ai-service/src/main/resources/application-test.yml
@@ -0,0 +1,25 @@
+spring:
+  data:
+    redis:
+      host: localhost
+      port: 6379
+  datasource:
+    driver-class-name: com.mysql.cj.jdbc.Driver
+    url: jdbc:mysql://localhost/aioj_test
+    username: root
+    password: root
+  cloud:
+    nacos:
+      discovery:
+        enabled: true
+        register-enabled: true
+        server-addr: localhost:8848
+
+# AI 服务配置 - 测试环境
+ai:
+  openai:
+    api-key: ${OPENAI_API_KEY:sk-test-key}
+    base-url: ${OPENAI_BASE_URL:https://api.openai.com}
+    model: gpt-4
+    max-tokens: 2000
+    temperature: 0.7
diff --git a/aioj-backend-ai-service/src/main/resources/application.yml b/aioj-backend-ai-service/src/main/resources/application.yml
new file mode 100644
index 0000000..1b2e0a0
--- /dev/null
+++ b/aioj-backend-ai-service/src/main/resources/application.yml
@@ -0,0 +1,57 @@
+spring:
+  application:
+    name: aioj-ai-service
+  profiles:
+    active: @env@
+server:
+  port: 18084
+  servlet:
+    context-path: /api
+  error:
+    include-stacktrace: never
+springdoc:
+  api-docs:
+    enabled: true
+    path: /v3/api-docs
+  default-flat-param-object: true
+  swagger-ui:
+    path: /swagger-ui.html
+    tags-sorter: alpha
+    operations-sorter: alpha
+  group-configs:
+    - group: 'default'
+      paths-to-match: '/api/**'
+      packages-to-scan: cn.meowrain.aioj.backend.aiservice.controller
+knife4j:
+  basic:
+    enable: true
+  setting:
+    language: zh_cn
+mybatis-plus:
+  configuration:
+    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
+  mapper-locations: classpath*:/mapper/**/*.xml
+
+# JWT 配置（必须与 auth-service 保持一致）
+jwt:
+  enabled: true
+  secret: "12345678901234567890123456789012"  # 至少32字节
+  access-expire: 900000           # 15分钟
+  refresh-expire: 604800000       # 7天
+
+# AI 服务配置
+ai:
+  openai:
+    api-key: ${OPENAI_API_KEY:your-api-key}
+    base-url: ${OPENAI_BASE_URL:https://api.openai.com}
+    model: ${OPENAI_MODEL:gpt-4}
+    max-tokens: ${OPENAI_MAX_TOKENS:2000}
+    temperature: ${OPENAI_TEMPERATURE:0.7}
+
+aioj:
+  log:
+    enabled: true
+    max-length: 20000
+logging:
+  file:
+    path: ./logs/${spring.application.name}
diff --git a/aioj-backend-ai-service/src/main/resources/logback-spring.xml b/aioj-backend-ai-service/src/main/resources/logback-spring.xml
new file mode 100644
index 0000000..610aaf8
--- /dev/null
+++ b/aioj-backend-ai-service/src/main/resources/logback-spring.xml
@@ -0,0 +1,54 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration scan="true" scanPeriod="60 seconds" debug="false">
+    <!-- 日志输出位置 -->
+    <springProperty scope="context" name="LOG_HOME" source="logging.file.path" defaultValue="./logs/aioj-ai-service"/>
+
+    <!-- 控制台输出 -->
+    <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
+            <charset>UTF-8</charset>
+        </encoder>
+    </appender>
+
+    <!-- 文件输出 -->
+    <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
+        <file>${LOG_HOME}/aioj-ai-service.log</file>
+        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
+            <fileNamePattern>${LOG_HOME}/aioj-ai-service.%d{yyyy-MM-dd}.log</fileNamePattern>
+            <maxHistory>30</maxHistory>
+        </rollingPolicy>
+        <encoder>
+            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
+            <charset>UTF-8</charset>
+        </encoder>
+    </appender>
+
+    <!-- 错误日志单独输出 -->
+    <appender name="ERROR_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
+        <file>${LOG_HOME}/aioj-ai-service-error.log</file>
+        <filter class="ch.qos.logback.classic.filter.LevelFilter">
+            <level>ERROR</level>
+            <onMatch>ACCEPT</onMatch>
+            <onMismatch>DENY</onMismatch>
+        </filter>
+        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
+            <fileNamePattern>${LOG_HOME}/aioj-ai-service-error.%d{yyyy-MM-dd}.log</fileNamePattern>
+            <maxHistory>30</maxHistory>
+        </rollingPolicy>
+        <encoder>
+            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern>
+            <charset>UTF-8</charset>
+        </encoder>
+    </appender>
+
+    <!-- 日志级别 -->
+    <root level="INFO">
+        <appender-ref ref="CONSOLE"/>
+        <appender-ref ref="FILE"/>
+        <appender-ref ref="ERROR_FILE"/>
+    </root>
+
+    <!-- SQL日志 -->
+    <logger name="cn.meowrain.aioj.backend.aiservice.dao.mapper" level="DEBUG"/>
+</configuration>