diff --git a/frontend/src/modules/editor/api/index.ts b/frontend/src/modules/editor/api/index.ts
index e69de29..e7ebf37 100644
--- a/frontend/src/modules/editor/api/index.ts
+++ b/frontend/src/modules/editor/api/index.ts
@@ -0,0 +1,19 @@
+import api from '@/shared/api'
+import type { EditableFile, ImpactResult, ScanResult } from '@/shared/types/api'
+
+export async function getFile(projectId: string, path: string): Promise<EditableFile> {
+  const { data } = await api.get<EditableFile>(`/projects/${projectId}/files/${path}`)
+  return data
+}
+
+export async function saveFile(projectId: string, path: string, content: string): Promise<ScanResult> {
+  const { data } = await api.put<ScanResult>(`/projects/${projectId}/files/${path}`, content, {
+    headers: { 'Content-Type': 'text/plain' },
+  })
+  return data
+}
+
+export async function getFileImpact(projectId: string, path: string): Promise<ImpactResult> {
+  const { data } = await api.get<ImpactResult>(`/projects/${projectId}/files/${path}/impact`)
+  return data
+}
diff --git a/frontend/src/modules/editor/components/CsvEditor.vue b/frontend/src/modules/editor/components/CsvEditor.vue
index e69de29..2fa3a10 100644
--- a/frontend/src/modules/editor/components/CsvEditor.vue
+++ b/frontend/src/modules/editor/components/CsvEditor.vue
@@ -0,0 +1,65 @@
+<template>
+  <div class="csv-editor">
+    <div class="toolbar">
+      <button class="primary" @click="addRow">添加行</button>
+      <button class="primary" @click="$emit('save', serialize())">保存</button>
+    </div>
+    <table>
+      <thead>
+        <tr>
+          <th v-for="(h, i) in headers" :key="i">{{ h }}</th>
+          <th>操作</th>
+        </tr>
+      </thead>
+      <tbody>
+        <tr v-for="(row, ri) in rows" :key="ri">
+          <td v-for="(cell, ci) in row" :key="ci" contenteditable @blur="updateCell(ri, ci, $event)">{{ cell }}</td>
+          <td><button class="danger" @click="removeRow(ri)">删除</button></td>
+        </tr>
+      </tbody>
+    </table>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { ref, onMounted } from 'vue'
+
+const props = defineProps<{ content: string }>()
+defineEmits<{ save: [content: string] }>()
+
+const headers = ref<string[]>([])
+const rows = ref<string[][]>([])
+
+onMounted(() => {
+  const lines = props.content.trim().split('\n')
+  if (lines.length > 0) {
+    headers.value = lines[0].split(',')
+    rows.value = lines.slice(1).map(l => l.split(','))
+  }
+})
+
+function updateCell(ri: number, ci: number, event: Event) {
+  rows.value[ri][ci] = (event.target as HTMLElement).textContent || ''
+}
+
+function addRow() {
+  rows.value.push(headers.value.map(() => ''))
+}
+
+function removeRow(index: number) {
+  rows.value.splice(index, 1)
+}
+
+function serialize(): string {
+  return [headers.value.join(','), ...rows.value.map(r => r.join(','))].join('\n') + '\n'
+}
+</script>
+
+<style scoped>
+.toolbar { margin-bottom: 12px; display: flex; gap: 8px; }
+table { width: 100%; border-collapse: collapse; font-size: 13px; }
+th, td { border: 1px solid #e0e0e0; padding: 6px 8px; text-align: left; }
+th { background: #f5f5f5; font-weight: 600; }
+td[contenteditable] { cursor: text; }
+td[contenteditable]:focus { outline: 2px solid #1976D2; }
+</style>
diff --git a/frontend/src/modules/editor/components/EditorPage.vue b/frontend/src/modules/editor/components/EditorPage.vue
new file mode 100644
index 0000000..5956af1
--- /dev/null
+++ b/frontend/src/modules/editor/components/EditorPage.vue
@@ -0,0 +1,47 @@
+<template>
+  <div class="editor-page">
+    <h1>文件编辑器</h1>
+    <div v-if="!currentFile" class="empty">
+      <p>选择一个文件开始编辑</p>
+      <input v-model="filePath" placeholder="输入相对路径，如 business-architecture/02-capability-map.csv" />
+      <button class="primary" @click="load">打开</button>
+    </div>
+    <div v-else>
+      <p class="meta">{{ currentFile.path }} ({{ currentFile.format }})</p>
+      <CsvEditor v-if="currentFile.format === 'csv'" :content="currentFile.content" @save="handleSave" />
+      <MdEditor v-else :initial-content="currentFile.content" @save="handleSave" />
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { ref } from 'vue'
+import { useRoute } from 'vue-router'
+import { storeToRefs } from 'pinia'
+import { useEditorStore } from '../composables/useEditor'
+import CsvEditor from './CsvEditor.vue'
+import MdEditor from './MdEditor.vue'
+
+const route = useRoute()
+const store = useEditorStore()
+const { currentFile } = storeToRefs(store)
+
+const filePath = ref('')
+
+function load() {
+  if (filePath.value) {
+    store.loadFile(route.params.id as string, filePath.value)
+  }
+}
+
+function handleSave(content: string) {
+  store.saveFile(route.params.id as string, currentFile.value!.path, content)
+}
+</script>
+
+<style scoped>
+h1 { margin-bottom: 16px; }
+.meta { font-size: 13px; color: #666; margin-bottom: 12px; }
+.empty { text-align: center; padding: 48px; }
+.empty input { margin: 12px 0; max-width: 500px; }
+</style>
diff --git a/frontend/src/modules/editor/components/MdEditor.vue b/frontend/src/modules/editor/components/MdEditor.vue
index e69de29..de3be8f 100644
--- a/frontend/src/modules/editor/components/MdEditor.vue
+++ b/frontend/src/modules/editor/components/MdEditor.vue
@@ -0,0 +1,39 @@
+<template>
+  <div class="md-editor">
+    <div class="toolbar">
+      <button class="primary" @click="$emit('save', content)">保存</button>
+    </div>
+    <div class="editor-panes">
+      <textarea v-model="content" class="editor-input"></textarea>
+      <div class="editor-preview" v-html="preview"></div>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { ref, computed } from 'vue'
+
+const props = defineProps<{ initialContent: string }>()
+defineEmits<{ save: [content: string] }>()
+
+const content = ref(props.initialContent)
+
+const preview = computed(() => {
+  return content.value
+    .replace(/^### (.+)$/gm, '<h3>$1</h3>')
+    .replace(/^## (.+)$/gm, '<h2>$1</h2>')
+    .replace(/^# (.+)$/gm, '<h1>$1</h1>')
+    .replace(/\*\*(.+?)\*\*/g, '<strong>$1</strong>')
+    .replace(/\*(.+?)\*/g, '<em>$1</em>')
+    .replace(/`(.+?)`/g, '<code>$1</code>')
+    .replace(/^- (.+)$/gm, '<li>$1</li>')
+    .replace(/\n/g, '<br>')
+})
+</script>
+
+<style scoped>
+.toolbar { margin-bottom: 12px; }
+.editor-panes { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; height: calc(100vh - 200px); }
+.editor-input { font-family: monospace; font-size: 14px; resize: none; padding: 12px; border: 1px solid #e0e0e0; border-radius: 4px; }
+.editor-preview { padding: 12px; border: 1px solid #e0e0e0; border-radius: 4px; overflow-y: auto; }
+</style>
diff --git a/frontend/src/modules/editor/composables/useEditor.ts b/frontend/src/modules/editor/composables/useEditor.ts
index e69de29..5a6f046 100644
--- a/frontend/src/modules/editor/composables/useEditor.ts
+++ b/frontend/src/modules/editor/composables/useEditor.ts
@@ -0,0 +1,40 @@
+import { defineStore } from 'pinia'
+import { ref } from 'vue'
+import type { EditableFile, ImpactResult } from '@/shared/types/api'
+import * as editorApi from '../api'
+
+export const useEditorStore = defineStore('editor', () => {
+  const currentFile = ref<EditableFile | null>(null)
+  const impactResult = ref<ImpactResult | null>(null)
+  const saving = ref(false)
+  const error = ref<string | null>(null)
+
+  async function loadFile(projectId: string, path: string) {
+    try {
+      currentFile.value = await editorApi.getFile(projectId, path)
+    } catch (e: any) {
+      error.value = e.message
+    }
+  }
+
+  async function saveFile(projectId: string, path: string, content: string) {
+    saving.value = true
+    try {
+      await editorApi.saveFile(projectId, path, content)
+    } catch (e: any) {
+      error.value = e.message
+    } finally {
+      saving.value = false
+    }
+  }
+
+  async function analyzeImpact(projectId: string, path: string) {
+    try {
+      impactResult.value = await editorApi.getFileImpact(projectId, path)
+    } catch (e: any) {
+      error.value = e.message
+    }
+  }
+
+  return { currentFile, impactResult, saving, error, loadFile, saveFile, analyzeImpact }
+})
diff --git a/frontend/src/modules/editor/types/index.ts b/frontend/src/modules/editor/types/index.ts
index e69de29..0c6cc0d 100644
--- a/frontend/src/modules/editor/types/index.ts
+++ b/frontend/src/modules/editor/types/index.ts
@@ -0,0 +1 @@
+export type { EditableFile, ImpactResult, ImplProgress } from '@/shared/types/api'