diff --git a/src/common/components/AnswerToStudent/index.tsx b/src/common/components/AnswerToStudent/index.tsx
index f4cae74..cee3def 100644
--- a/src/common/components/AnswerToStudent/index.tsx
+++ b/src/common/components/AnswerToStudent/index.tsx
@@ -6,7 +6,7 @@ function AnswerToStudent() {
   return (
     <View className="question-container">
       <View>问题问题问题问题问题:</View>
-      <View>10个回答</View>
+      <View>1个回答</View>
     </View>
   );
 }
diff --git a/src/common/types/userTypes.ts b/src/common/types/userTypes.ts
index e1ae997..db8e1cf 100644
--- a/src/common/types/userTypes.ts
+++ b/src/common/types/userTypes.ts
@@ -36,3 +36,30 @@ export type WebUserProfileVo = {
   using_title: string;
   utime?: number;
 };
+/**
+ * ginx.Result
+ */
+export interface GradeResponse {
+  /**
+   * 错误码，非 0 表示失败
+   */
+  code?: number;
+  data?: GradeChart[];
+  /**
+   * 错误或成功 描述
+   */
+  msg?: string;
+}
+
+/**
+ * web.GradeChartVo
+ */
+export interface GradeChart {
+  avg: number;
+  grades: Grade[];
+}
+
+export interface Grade {
+  percent?: number;
+  total_grades: number[];
+}
diff --git a/src/custom-tab-bar/index.tsx b/src/custom-tab-bar/index.tsx
index 93d56b8..808dca0 100644
--- a/src/custom-tab-bar/index.tsx
+++ b/src/custom-tab-bar/index.tsx
@@ -1,7 +1,7 @@
 /* eslint-disable import/first */
 import { View } from '@tarojs/components';
 import Taro from '@tarojs/taro';
-import { memo } from 'react';
+import React, { memo } from 'react';
 import { AtIcon } from 'taro-ui';
 
 import './index.scss';
@@ -14,7 +14,7 @@ interface TabBarProps {}
 const TAB_LIST: Array<{ pagePath: string; name: string; icon?: string }> = [
   { pagePath: '/pages/main/index', name: 'Home', icon: 'streaming' },
   { pagePath: '/pages/main/index', name: 'Download', icon: 'download-cloud' },
-  { pagePath: '/pages/main/index', name: '+' },
+  { pagePath: '/pages/evaluate/evaluate', name: '+' },
   { pagePath: '/pages/notification/index', name: 'Massage', icon: 'message' },
   { pagePath: '/pages/profile/index', name: 'Profile', icon: 'user' },
 ];
diff --git a/src/pages/classInfo/index.tsx b/src/pages/classInfo/index.tsx
index 48ca395..9293a2c 100644
--- a/src/pages/classInfo/index.tsx
+++ b/src/pages/classInfo/index.tsx
@@ -15,6 +15,7 @@ import AnswerToStudent from '@/common/components/AnswerToStudent';
 import LineChart from '@/common/components/chart';
 import Label3 from '@/common/components/label3/label3';
 import ShowStar from '@/common/components/showStar/showStar';
+import { GradeChart } from '@/common/types/userTypes';
 import { get } from '@/common/utils/fetch';
 
 const coursePropertyMap = {
@@ -38,22 +39,20 @@ function translateCourseProperty(englishDescription) {
 
 export default function Index() {
   const [course, setCourse] = useState<Course | null>(null);
-
   const [courseId, setCourseId] = useState<string | null>(null);
-
   const [comments, setComments] = useState<CommentInfoType[]>([]);
+  const [grade, setGrade] = useState<GradeChart>(); // 将 grade 的类型设置为 GradeChart | null
 
   useEffect(() => {
     const getParams = () => {
       const instance = Taro.getCurrentInstance();
-      // 使用可选链操作符安全访问 router 和 params
       const params = instance?.router?.params || {};
 
       if (params.course_id) setCourseId(params.course_id);
     };
 
     getParams();
-  }, []); // 这个 effect 仅在组件挂载时运行一次
+  }, []);
 
   useEffect(() => {
     // eslint-disable-next-line @typescript-eslint/require-await
@@ -65,7 +64,6 @@ export default function Index() {
           setCourse(res.data);
         });
       } catch (error) {
-        // 错误处理，例如弹出提示
         console.error('Failed to fetch course data:', error);
       }
     };
@@ -83,26 +81,44 @@ export default function Index() {
           setComments(res.data as CommentInfoType[]);
         });
       } catch (error) {
-        // 错误处理，例如弹出提示
         console.error('Failed to fetch course data:', error);
       }
     };
 
     if (courseId) void getCommentData();
-  }, [courseId]); // 在courseId变化时运行
+  }, [courseId]);
 
-  if (!course) {
+  useEffect(() => {
+    const fetchGrades = async () => {
+      try {
+        await get(`/grades/courses/${courseId}`, true).then((res) => {
+          console.log(res.data);
+          // eslint-disable-next-line @typescript-eslint/no-unsafe-argument
+          setGrade(res.data); // 设置 grade 数据
+        });
+      } catch (err) {
+        console.error('Failed to fetch grades data', err);
+      }
+    };
+    if (courseId) void fetchGrades();
+  }, [courseId]);
+
+  if (!course || !grade) {
     return <Text>Loading...</Text>; // 数据加载中
   }
 
-  // 检查 course.features 是否存在并且是一个数组
+  const xLabels = ['0-40', '40-50', '50-60', '60-70', '70-80', '80-90', '90-100'];
+
+  const avgScore = grade.avg;
+  const heightLightIndex = Math.floor(avgScore / 10) - 4; // 假设 0-40 开始对应 index 0，每个区间跨度 10
+  // 处理 y 轴的数据，确保它们在 0 到 100 之间
+  const yData = grade.grades.flatMap((g) => g.total_grades.map((score) => score ?? 0));
+  // 计算高亮百分比
+  const heightLightPercent = heightLightIndex / xLabels.length;
+
   const featuresList =
     course.features && Array.isArray(course.features) ? course.features : [];
 
-  // @ts-ignore
-  // @ts-ignore
-  // @ts-ignore
-  // @ts-ignore
   return (
     <View className="classInfo">
       <View className="theClassnme">{course?.name}</View>
@@ -118,14 +134,19 @@ export default function Index() {
       </View>
       <View className="p">
         课程特点: {}
-        {/* @ts-ignore*/}
         {featuresList.map((feature, keyindex) => (
           <Label3 key={keyindex} content={feature} />
         ))}
       </View>
-      {/*<>*/}
+      {/* 将 grade 数据传递给 LineChart */}
       <View className="h-1/3 w-5/6 pt-1.5">
-        <LineChart className="text-center"></LineChart>
+        <LineChart
+          className="text-center"
+          data={yData}
+          xLabels={xLabels}
+          heightLightPercent={heightLightPercent}
+          title={`平均分: ${avgScore}`}
+        />
       </View>
       <View>
         <View>
@@ -154,9 +175,9 @@ export default function Index() {
                 url: `/pages/evaluateInfo/index?comment=${serializedComment}`,
               });
             }}
-            key={comment.id} // 使用唯一key值来帮助React识别哪些元素是不同的
-            {...comment} // 展开comment对象，将属性传递给Comment组件
-            type="inner" // 固定属性，不需要从数组中获取
+            key={comment.id}
+            {...comment}
+            type="inner"
           />
         ))}
     </View>