diff --git a/miniapp/src/api/knowledge.ts b/miniapp/src/api/knowledge.ts
index 4994b84..ec06440 100644
--- a/miniapp/src/api/knowledge.ts
+++ b/miniapp/src/api/knowledge.ts
@@ -16,6 +16,7 @@ export interface Disease {
   recurrence?: string;
   detection?: string;
   prevention?: string;
+  imageUrl?: string;
   sortOrder?: number;
 }
 
diff --git a/miniapp/src/pages/knowledge/detail/index.module.scss b/miniapp/src/pages/knowledge/detail/index.module.scss
index 1614ee4..0ce213a 100644
--- a/miniapp/src/pages/knowledge/detail/index.module.scss
+++ b/miniapp/src/pages/knowledge/detail/index.module.scss
@@ -39,6 +39,19 @@
   padding: $spacing-lg;
 }
 
+.imageCard {
+  margin: $spacing-lg $spacing-lg 0;
+  background: $color-bg-card;
+  border-radius: $radius-md;
+  padding: $spacing-md;
+  box-shadow: $shadow-card;
+}
+
+.symptomImage {
+  width: 100%;
+  border-radius: $radius-sm;
+}
+
 .sectionCard {
   background: $color-bg-card;
   border-radius: $radius-md;
diff --git a/miniapp/src/pages/knowledge/detail/index.tsx b/miniapp/src/pages/knowledge/detail/index.tsx
index a32317a..008f889 100644
--- a/miniapp/src/pages/knowledge/detail/index.tsx
+++ b/miniapp/src/pages/knowledge/detail/index.tsx
@@ -1,5 +1,5 @@
 import React, { useCallback, useEffect, useState } from 'react';
-import { ScrollView, Text, View } from '@tarojs/components';
+import { Image, ScrollView, Text, View } from '@tarojs/components';
 import Taro, { useRouter } from '@tarojs/taro';
 import styles from './index.module.scss';
 import {
@@ -86,6 +86,11 @@ const DetailPage: React.FC = () => {
           <Text className={styles.heroName}>{disease.name}</Text>
           <Text className={styles.heroTag}>{CATEGORY_LABELS[disease.category] || disease.category}</Text>
         </View>
+        {disease.imageUrl ? (
+          <View className={styles.imageCard}>
+            <Image className={styles.symptomImage} src={disease.imageUrl} mode="widthFix" />
+          </View>
+        ) : null}
         <View className={styles.sectionList}>
           {sections.map((s) => (
             <View key={s.label} className={styles.sectionCard}>
diff --git a/miniapp/src/types/index.ts b/miniapp/src/types/index.ts
index 5ffc0b3..f580ab8 100644
--- a/miniapp/src/types/index.ts
+++ b/miniapp/src/types/index.ts
@@ -196,6 +196,7 @@ export interface Disease {
   recurrence?: string;
   detection?: string;
   prevention?: string;
+  imageUrl?: string;
   sortOrder?: number;
 }
 
diff --git a/web/src/dal/knowledge.ts b/web/src/dal/knowledge.ts
index 9a589df..f690d5a 100644
--- a/web/src/dal/knowledge.ts
+++ b/web/src/dal/knowledge.ts
@@ -45,3 +45,9 @@ export const listArticles = (params?: any) => get<KnowledgeArticle[]>('/knowledg
 export const createArticle = (data: Partial<KnowledgeArticle>) => post<KnowledgeArticle>('/knowledge/articles', data);
 export const updateArticle = (id: string, data: Partial<KnowledgeArticle>) => patch<KnowledgeArticle>(`/knowledge/articles/${id}`, data);
 export const deleteArticle = (id: string) => del(`/knowledge/articles/${id}`);
+
+export const uploadKnowledgeImage = (file: File) => {
+  const fd = new FormData();
+  fd.append('file', file);
+  return post<{ url: string; name: string; size: number }>('/knowledge/images', fd);
+};
diff --git a/web/src/pages/Knowledge.tsx b/web/src/pages/Knowledge.tsx
index ca9f16d..b49b03a 100644
--- a/web/src/pages/Knowledge.tsx
+++ b/web/src/pages/Knowledge.tsx
@@ -1,5 +1,6 @@
 import { useRef, useState } from 'react';
-import { Button, Form, Input, InputNumber, Modal, Popconfirm, Select, Switch, Tabs, Tag, message } from 'antd';
+import { Button, Form, Input, InputNumber, Modal, Popconfirm, Select, Switch, Tabs, Tag, Upload, message } from 'antd';
+import type { UploadFile } from 'antd';
 import { PlusOutlined } from '@ant-design/icons';
 import { ProTable, type ActionType, type ProColumns } from '@ant-design/pro-components';
 import {
@@ -11,6 +12,7 @@ import {
   createArticle,
   updateArticle,
   deleteArticle,
+  uploadKnowledgeImage,
   type Disease,
   type KnowledgeArticle,
 } from '../dal/knowledge';
@@ -38,6 +40,7 @@ function DiseaseTab() {
   const [modalOpen, setModalOpen] = useState(false);
   const [form] = Form.useForm<Partial<Disease>>();
   const [editing, setEditing] = useState<Disease | null>(null);
+  const [imageList, setImageList] = useState<UploadFile[]>([]);
 
   const columns: ProColumns<Disease>[] = [
     { title: '序号', valueType: 'indexBorder', search: false, width: 60 },
@@ -69,6 +72,9 @@ function DiseaseTab() {
           onClick={() => {
             setEditing(r);
             form.setFieldsValue(r);
+            setImageList(
+              r.imageUrl ? [{ uid: '-1', name: '症状图谱', status: 'done', url: r.imageUrl }] : [],
+            );
             setModalOpen(true);
           }}
         >
@@ -97,6 +103,7 @@ function DiseaseTab() {
     setEditing(null);
     form.resetFields();
     form.setFieldsValue({ category: 'viral', enabled: true, sortOrder: 0 });
+    setImageList([]);
     setModalOpen(true);
   };
 
@@ -147,6 +154,35 @@ function DiseaseTab() {
               options={Object.entries(CATEGORY_LABELS).map(([value, label]) => ({ value, label }))}
             />
           </Form.Item>
+          <Form.Item label="症状图谱图片">
+            <Upload
+              listType="picture-card"
+              maxCount={1}
+              accept=".jpg,.jpeg,.png,.webp"
+              fileList={imageList}
+              customRequest={async ({ file, onSuccess, onError }) => {
+                try {
+                  const res = await uploadKnowledgeImage(file as File);
+                  form.setFieldValue('imageUrl', res.url);
+                  setImageList([{ uid: '-1', name: res.name, status: 'done', url: res.url }]);
+                  onSuccess?.(res);
+                } catch (e) {
+                  onError?.(e as Error);
+                }
+              }}
+              onRemove={() => {
+                setImageList([]);
+                form.setFieldValue('imageUrl', undefined);
+              }}
+            >
+              {imageList.length >= 1 ? null : (
+                <div>
+                  <PlusOutlined />
+                  <div style={{ marginTop: 8 }}>上传图谱</div>
+                </div>
+              )}
+            </Upload>
+          </Form.Item>
           <Form.Item label="病原" name="pathogen">
             <Input.TextArea rows={2} />
           </Form.Item>