diff --git a/reading-platform-java/src/main/java/com/reading/platform/controller/teacher/TeacherLessonController.java b/reading-platform-java/src/main/java/com/reading/platform/controller/teacher/TeacherLessonController.java
index 7300b49..846d814 100644
--- a/reading-platform-java/src/main/java/com/reading/platform/controller/teacher/TeacherLessonController.java
+++ b/reading-platform-java/src/main/java/com/reading/platform/controller/teacher/TeacherLessonController.java
@@ -1,6 +1,7 @@
 package com.reading.platform.controller.teacher;
 
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
+import com.reading.platform.common.mapper.ClassMapper;
 import com.reading.platform.common.mapper.LessonMapper;
 import com.reading.platform.common.mapper.StudentRecordMapper;
 import com.reading.platform.common.response.PageResult;
@@ -10,6 +11,9 @@ import com.reading.platform.dto.request.LessonCreateRequest;
 import com.reading.platform.dto.request.LessonProgressRequest;
 import com.reading.platform.dto.request.LessonUpdateRequest;
 import com.reading.platform.dto.request.StudentRecordRequest;
+import com.reading.platform.dto.response.ClassResponse;
+import com.reading.platform.dto.response.CourseResponse;
+import com.reading.platform.dto.response.LessonDetailResponse;
 import com.reading.platform.dto.response.LessonResponse;
 import com.reading.platform.dto.response.StudentRecordResponse;
 import com.reading.platform.entity.Clazz;
@@ -19,6 +23,7 @@ import com.reading.platform.entity.LessonFeedback;
 import com.reading.platform.entity.StudentRecord;
 import com.reading.platform.mapper.ClazzMapper;
 import com.reading.platform.mapper.CourseMapper;
+import com.reading.platform.service.CourseService;
 import com.reading.platform.service.LessonService;
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
@@ -41,6 +46,8 @@ public class TeacherLessonController {
     private final StudentRecordMapper studentRecordMapper;
     private final CourseMapper courseMapper;
     private final ClazzMapper clazzMapper;
+    private final ClassMapper classMapper;
+    private final CourseService courseService;
 
     @Operation(summary = "Create lesson")
     @PostMapping
@@ -59,13 +66,31 @@ public class TeacherLessonController {
         return Result.success(lessonMapper.toVO(lesson));
     }
 
-    @Operation(summary = "Get lesson by ID")
+    @Operation(summary = "Get lesson by ID（含课程、班级，供上课页面使用）")
     @GetMapping("/{id}")
-    public Result<LessonResponse> getLesson(@PathVariable Long id) {
+    public Result<LessonDetailResponse> getLesson(@PathVariable Long id) {
         Lesson lesson = lessonService.getLessonById(id);
-        LessonResponse vo = lessonMapper.toVO(lesson);
-        enrichWithCourseAndClass(vo);
-        return Result.success(vo);
+        LessonResponse lessonVo = lessonMapper.toVO(lesson);
+        enrichWithCourseAndClass(lessonVo);
+
+        LessonDetailResponse detail = new LessonDetailResponse();
+        detail.setLesson(lessonVo);
+
+        if (lesson.getCourseId() != null) {
+            try {
+                CourseResponse courseResp = courseService.getCourseByIdWithLessons(lesson.getCourseId());
+                detail.setCourse(courseResp);
+            } catch (Exception e) {
+                // 课程不存在时留空
+            }
+        }
+        if (lesson.getClassId() != null) {
+            Clazz clazz = clazzMapper.selectById(lesson.getClassId());
+            if (clazz != null) {
+                detail.setClassInfo(classMapper.toVO(clazz));
+            }
+        }
+        return Result.success(detail);
     }
 
     @Operation(summary = "Get my lessons")
diff --git a/reading-platform-java/src/main/java/com/reading/platform/dto/request/LessonProgressRequest.java b/reading-platform-java/src/main/java/com/reading/platform/dto/request/LessonProgressRequest.java
index dd82435..893799a 100644
--- a/reading-platform-java/src/main/java/com/reading/platform/dto/request/LessonProgressRequest.java
+++ b/reading-platform-java/src/main/java/com/reading/platform/dto/request/LessonProgressRequest.java
@@ -3,6 +3,8 @@ package com.reading.platform.dto.request;
 import io.swagger.v3.oas.annotations.media.Schema;
 import lombok.Data;
 
+import java.util.List;
+
 /**
  * 课程进度保存请求
  */
@@ -16,13 +18,13 @@ public class LessonProgressRequest {
     @Schema(description = "当前步骤 ID")
     private Integer currentStepId;
 
-    @Schema(description = "课程 ID 列表 (JSON)")
-    private String lessonIds;
+    @Schema(description = "课程 ID 列表")
+    private List<Long> lessonIds;
 
-    @Schema(description = "已完成课程 ID 列表 (JSON)")
-    private String completedLessonIds;
+    @Schema(description = "已完成课程 ID 列表")
+    private List<Long> completedLessonIds;
 
-    @Schema(description = "进度数据 (JSON)")
-    private String progressData;
+    @Schema(description = "进度数据 (JSON 对象)")
+    private Object progressData;
 
 }
diff --git a/reading-platform-java/src/main/java/com/reading/platform/dto/response/CourseLessonResponse.java b/reading-platform-java/src/main/java/com/reading/platform/dto/response/CourseLessonResponse.java
index d7eb927..737ac94 100644
--- a/reading-platform-java/src/main/java/com/reading/platform/dto/response/CourseLessonResponse.java
+++ b/reading-platform-java/src/main/java/com/reading/platform/dto/response/CourseLessonResponse.java
@@ -7,6 +7,7 @@ import lombok.NoArgsConstructor;
 import lombok.AllArgsConstructor;
 
 import java.time.LocalDateTime;
+import java.util.List;
 
 /**
  * 课程环节响应
@@ -76,6 +77,9 @@ public class CourseLessonResponse {
     @Schema(description = "排序号")
     private Integer sortOrder;
 
+    @Schema(description = "教学环节列表")
+    private List<LessonStepResponse> steps;
+
     @Schema(description = "创建时间")
     private LocalDateTime createdAt;
 
diff --git a/reading-platform-java/src/main/java/com/reading/platform/dto/response/LessonDetailResponse.java b/reading-platform-java/src/main/java/com/reading/platform/dto/response/LessonDetailResponse.java
new file mode 100644
index 0000000..86040d8
--- /dev/null
+++ b/reading-platform-java/src/main/java/com/reading/platform/dto/response/LessonDetailResponse.java
@@ -0,0 +1,23 @@
+package com.reading.platform.dto.response;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Data;
+
+/**
+ * 授课记录详情响应（含课程、班级，供上课页面使用）
+ */
+@Data
+@Schema(description = "授课记录详情响应")
+public class LessonDetailResponse {
+
+    @Schema(description = "授课记录基本信息")
+    private LessonResponse lesson;
+
+    @Schema(description = "课程信息（含 courseLessons 及 steps）")
+    private CourseResponse course;
+
+    @JsonProperty("class")
+    @Schema(description = "班级信息")
+    private ClassResponse classInfo;
+}
diff --git a/reading-platform-java/src/main/java/com/reading/platform/dto/response/LessonStepResponse.java b/reading-platform-java/src/main/java/com/reading/platform/dto/response/LessonStepResponse.java
index 72004d0..09d9dae 100644
--- a/reading-platform-java/src/main/java/com/reading/platform/dto/response/LessonStepResponse.java
+++ b/reading-platform-java/src/main/java/com/reading/platform/dto/response/LessonStepResponse.java
@@ -1,8 +1,10 @@
 package com.reading.platform.dto.response;
 
 import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.AllArgsConstructor;
 import lombok.Builder;
 import lombok.Data;
+import lombok.NoArgsConstructor;
 
 import java.time.LocalDateTime;
 
@@ -12,6 +14,8 @@ import java.time.LocalDateTime;
  */
 @Data
 @Builder
+@NoArgsConstructor
+@AllArgsConstructor
 @Schema(description = "教学环节响应")
 public class LessonStepResponse {
 
diff --git a/reading-platform-java/src/main/java/com/reading/platform/service/impl/CourseServiceImpl.java b/reading-platform-java/src/main/java/com/reading/platform/service/impl/CourseServiceImpl.java
index 162d8c1..12393b2 100644
--- a/reading-platform-java/src/main/java/com/reading/platform/service/impl/CourseServiceImpl.java
+++ b/reading-platform-java/src/main/java/com/reading/platform/service/impl/CourseServiceImpl.java
@@ -10,8 +10,10 @@ import com.reading.platform.dto.request.CourseCreateRequest;
 import com.reading.platform.dto.request.CourseUpdateRequest;
 import com.reading.platform.dto.response.CourseLessonResponse;
 import com.reading.platform.dto.response.CourseResponse;
+import com.reading.platform.dto.response.LessonStepResponse;
 import com.reading.platform.entity.Course;
 import com.reading.platform.entity.CourseLesson;
+import com.reading.platform.entity.LessonStep;
 import com.reading.platform.mapper.CourseMapper;
 import com.reading.platform.service.CourseLessonService;
 import com.reading.platform.service.CourseService;
@@ -305,12 +307,21 @@ public class CourseServiceImpl extends ServiceImpl<CourseMapper, Course>
         CourseResponse response = new CourseResponse();
         BeanUtils.copyProperties(course, response);
 
-        // 查询关联的课程环节
+        // 查询关联的课程环节及教学步骤
         List<CourseLesson> lessons = courseLessonService.findByCourseId(id);
         List<CourseLessonResponse> lessonResponses = lessons.stream()
             .map(lesson -> {
                 CourseLessonResponse res = new CourseLessonResponse();
                 BeanUtils.copyProperties(lesson, res);
+                List<LessonStep> steps = courseLessonService.findSteps(lesson.getId());
+                List<LessonStepResponse> stepResponses = steps.stream()
+                    .map(step -> {
+                        LessonStepResponse sr = new LessonStepResponse();
+                        BeanUtils.copyProperties(step, sr);
+                        return sr;
+                    })
+                    .collect(Collectors.toList());
+                res.setSteps(stepResponses);
                 return res;
             })
             .collect(Collectors.toList());
diff --git a/reading-platform-java/src/main/java/com/reading/platform/service/impl/LessonServiceImpl.java b/reading-platform-java/src/main/java/com/reading/platform/service/impl/LessonServiceImpl.java
index 4ee9472..b4ed7f4 100644
--- a/reading-platform-java/src/main/java/com/reading/platform/service/impl/LessonServiceImpl.java
+++ b/reading-platform-java/src/main/java/com/reading/platform/service/impl/LessonServiceImpl.java
@@ -5,6 +5,7 @@ import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import com.reading.platform.common.enums.ErrorCode;
 import com.reading.platform.common.exception.BusinessException;
+import com.alibaba.fastjson2.JSON;
 import com.reading.platform.dto.request.LessonCreateRequest;
 import com.reading.platform.dto.request.LessonUpdateRequest;
 import com.reading.platform.dto.request.LessonProgressRequest;
@@ -328,14 +329,14 @@ public class LessonServiceImpl extends ServiceImpl<LessonMapper, Lesson>
         if (request.getCurrentStepId() != null) {
             lesson.setCurrentStepId(request.getCurrentStepId());
         }
-        if (StringUtils.hasText(request.getLessonIds())) {
-            lesson.setLessonIds(request.getLessonIds());
+        if (request.getLessonIds() != null) {
+            lesson.setLessonIds(JSON.toJSONString(request.getLessonIds()));
         }
-        if (StringUtils.hasText(request.getCompletedLessonIds())) {
-            lesson.setCompletedLessonIds(request.getCompletedLessonIds());
+        if (request.getCompletedLessonIds() != null) {
+            lesson.setCompletedLessonIds(JSON.toJSONString(request.getCompletedLessonIds()));
         }
-        if (StringUtils.hasText(request.getProgressData())) {
-            lesson.setProgressData(request.getProgressData());
+        if (request.getProgressData() != null) {
+            lesson.setProgressData(JSON.toJSONString(request.getProgressData()));
         }
 
         lessonMapper.updateById(lesson);