diff --git a/package.json b/package.json
index 200f9172..b4ec9aa3 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
   "license": "MIT",
   "scripts": {
     "dev": "electron-vite dev",
-    "test": "set ELECTRON_RUN_AS_NODE=1&& electron --test electron/shared/continuation-import.test.mjs electron/main/workspace-types.test.mjs renderer/src/features/workspace/outlineReorder.test.mjs renderer/src/features/workspace/volumeCollapseState.test.mjs renderer/src/features/workspace/workbenchMenu.test.mjs renderer/src/features/ai/taskRegistry.test.mjs renderer/src/features/ai/outlineReferences.test.mjs renderer/src/features/tutorials/tutorials.test.mjs renderer/src/features/knowledge/knowledgeCenter.test.mjs electron/main/story-state-store.test.mjs electron/main/knowledge-document-schema.test.mjs electron/main/ai/settings.test.mjs electron/main/ai/generate.test.mjs electron/main/ai/provider.test.mjs electron/main/ai/protocol-adapter.test.mjs electron/main/ai/proxy-fetch.test.mjs electron/main/ai/knowledge-retrieval.test.mjs electron/main/ai/state-backfill-store.test.mjs electron/main/ai/state-backfill-task-controller.test.mjs electron/main/ai/runtime/background-task-coordinator.test.mjs electron/main/ai/runtime/chapter-processing-store.test.mjs electron/main/ai/tasks/chapter-session-note.test.mjs electron/main/ai/tasks/outline-context.test.mjs electron/main/ai/tasks/story-state-generation.test.mjs electron/main/ai/tasks/worldview-type.test.mjs electron/main/ai/tasks/ranking-analysis.test.mjs electron/main/ai/tasks/qimao-ranking.test.mjs electron/main/ai/tasks/zongheng-ranking.test.mjs electron/main/ai/runtime-v2/conversation-manager.test.mjs electron/main/ai/runtime-v2/staged-changes-store.test.mjs electron/main/ai/runtime-v2/context-builder.test.mjs electron/main/ai/runtime-v2/agent-loop.test.mjs electron/main/ai/agent/tools/text-window.test.mjs electron/main/ai/agent/tools/knowledge-tools.test.mjs electron/main/ai/agent/tools/chapter-data-access.test.mjs electron/main/ai/agent/tools/chapter-html-edit.test.mjs electron/main/ai/runtime-v2/tools/stage-chapter-edit-core.test.mjs",
+    "test": "set ELECTRON_RUN_AS_NODE=1&& electron --test electron/shared/continuation-import.test.mjs electron/main/workspace-types.test.mjs renderer/src/features/workspace/outlineReorder.test.mjs renderer/src/features/workspace/volumeCollapseState.test.mjs renderer/src/features/workspace/workbenchMenu.test.mjs renderer/src/features/chapters/chapterFormatting.test.mjs renderer/src/features/ai/taskRegistry.test.mjs renderer/src/features/ai/outlineReferences.test.mjs renderer/src/features/tutorials/tutorials.test.mjs renderer/src/features/knowledge/knowledgeCenter.test.mjs electron/main/story-state-store.test.mjs electron/main/knowledge-document-schema.test.mjs electron/main/ai/settings.test.mjs electron/main/ai/generate.test.mjs electron/main/ai/provider.test.mjs electron/main/ai/protocol-adapter.test.mjs electron/main/ai/proxy-fetch.test.mjs electron/main/ai/knowledge-retrieval.test.mjs electron/main/ai/state-backfill-store.test.mjs electron/main/ai/state-backfill-task-controller.test.mjs electron/main/ai/runtime/background-task-coordinator.test.mjs electron/main/ai/runtime/chapter-processing-store.test.mjs electron/main/ai/tasks/chapter-session-note.test.mjs electron/main/ai/tasks/outline-context.test.mjs electron/main/ai/tasks/story-state-generation.test.mjs electron/main/ai/tasks/worldview-type.test.mjs electron/main/ai/tasks/ranking-analysis.test.mjs electron/main/ai/tasks/qimao-ranking.test.mjs electron/main/ai/tasks/zongheng-ranking.test.mjs electron/main/ai/runtime-v2/conversation-manager.test.mjs electron/main/ai/runtime-v2/staged-changes-store.test.mjs electron/main/ai/runtime-v2/context-builder.test.mjs electron/main/ai/runtime-v2/agent-loop.test.mjs electron/main/ai/agent/tools/text-window.test.mjs electron/main/ai/agent/tools/knowledge-tools.test.mjs electron/main/ai/agent/tools/chapter-data-access.test.mjs electron/main/ai/agent/tools/chapter-html-edit.test.mjs electron/main/ai/runtime-v2/tools/stage-chapter-edit-core.test.mjs",
     "test:ranking": "set ELECTRON_RUN_AS_NODE=1&& electron --test electron/main/ai/tasks/ranking-analysis.test.mjs",
     "typecheck": "vue-tsc --noEmit",
     "build": "pnpm run typecheck && electron-vite build",
diff --git a/renderer/src/components/chapterWorkspace/ChapterEditorPane.vue b/renderer/src/components/chapterWorkspace/ChapterEditorPane.vue
index adda732d..0b833513 100644
--- a/renderer/src/components/chapterWorkspace/ChapterEditorPane.vue
+++ b/renderer/src/components/chapterWorkspace/ChapterEditorPane.vue
@@ -1,6 +1,6 @@
 <script setup lang="ts">
 import { computed, h, onBeforeUnmount, onMounted, ref } from 'vue'
-import { Check, ChevronDown, ChevronRight, Folder, FocusIcon, History, Maximize2, Menu, MessageSquareQuote, Minus, Minimize2, Plus, RefreshCw, ShieldAlert, Sparkles, Type, Wand2 } from 'lucide-vue-next'
+import { AlignLeft, Check, ChevronDown, ChevronRight, Folder, FocusIcon, History, Maximize2, Menu, MessageSquareQuote, Minus, Minimize2, Plus, RefreshCw, ShieldAlert, Sparkles, Type, Wand2 } from 'lucide-vue-next'
 import { NAlert, NDropdown, NTag, NTooltip, useMessage } from 'naive-ui'
 import type { DropdownOption } from 'naive-ui'
 import SimpleChapterEditor from './SimpleChapterEditor.vue'
@@ -323,6 +323,19 @@ function discardRecovery(): void {
   recoverySnapshot.value = null
 }
 
+function formatCurrentChapter(): void {
+  const result = editorRef.value?.formatDocument()
+  if (result === 'empty' || !result) {
+    message.warning('当前章节还没有可排版的正文')
+    return
+  }
+  if (result === 'unchanged') {
+    message.info('当前正文已符合：首行缩进 2 字，段间空 1 行')
+    return
+  }
+  message.success('一键排版完成：首行缩进 2 字，段间空 1 行')
+}
+
 onMounted(() => {
   document.addEventListener('selectionchange', handleSelectionChange)
   document.addEventListener('mousedown', handleMouseDown)
@@ -380,6 +393,16 @@ onBeforeUnmount(() => {
           <button @click="stepFont(1)"><Plus :size="11" /></button>
         </div>
 
+        <button
+          class="toolbtn"
+          :disabled="!currentChapter"
+          title="整理段落：首行缩进 2 字，段间空 1 行"
+          @click="formatCurrentChapter"
+        >
+          <AlignLeft :size="13" />
+          <span>一键排版</span>
+        </button>
+
         <n-tooltip placement="bottom">
           <template #trigger>
             <button class="toolbtn" @click="emit('toggleFocus')"><FocusIcon :size="13" /></button>
@@ -734,6 +757,16 @@ onBeforeUnmount(() => {
   color: var(--arc-text-primary);
 }
 
+.toolbtn:disabled {
+  opacity: 0.45;
+  cursor: not-allowed;
+}
+
+.toolbtn:disabled:hover {
+  background: transparent;
+  color: var(--arc-text-secondary);
+}
+
 .toolbtn.primary {
   background: var(--arc-primary-soft);
   color: var(--arc-primary);
diff --git a/renderer/src/components/chapterWorkspace/SimpleChapterEditor.vue b/renderer/src/components/chapterWorkspace/SimpleChapterEditor.vue
index 2b49832c..45e1ed1e 100644
--- a/renderer/src/components/chapterWorkspace/SimpleChapterEditor.vue
+++ b/renderer/src/components/chapterWorkspace/SimpleChapterEditor.vue
@@ -6,6 +6,7 @@ import Placeholder from '@tiptap/extension-placeholder'
 import CharacterCount from '@tiptap/extension-character-count'
 import Underline from '@tiptap/extension-underline'
 import { ensureEditorHtmlContent } from '@/features/chapters/editorContent'
+import { formatChapterEditorDocument } from '@/features/chapters/chapterFormatting'
 import type { ChapterInsertionRequest, ChapterSelectionState } from '@/types/app'
 import { EditorSearchExtension } from '@/features/chapters/editorSearch'
 
@@ -95,6 +96,18 @@ function discardRecovery(): void {
   emit('recovery-available', null)
 }
 
+function formatDocument(): 'empty' | 'unchanged' | 'formatted' {
+  if (!editor.value) return 'empty'
+  if (!editor.value.getText().trim()) return 'empty'
+
+  const result = formatChapterEditorDocument(editor.value.getJSON())
+  if (!result.changed) return 'unchanged'
+
+  editor.value.commands.setContent(result.document, { emitUpdate: true })
+  editor.value.commands.focus()
+  return 'formatted'
+}
+
 function handleSelectionUpdate(): void {
   if (!editor.value) return
   const { from, to } = editor.value.state.selection
@@ -223,7 +236,7 @@ onBeforeUnmount(() => {
   editor.value?.destroy()
 })
 
-defineExpose({ editor, restoreRecovery, discardRecovery })
+defineExpose({ editor, restoreRecovery, discardRecovery, formatDocument })
 </script>
 
 <template>
@@ -242,10 +255,14 @@ defineExpose({ editor, restoreRecovery, discardRecovery })
 }
 
 :deep(.simple-editor p) {
-  margin-bottom: 16px;
+  margin: 0 0 1.8em;
   text-indent: 2em;
 }
 
+:deep(.simple-editor p:last-child) {
+  margin-bottom: 0;
+}
+
 :deep(.simple-editor p.is-editor-empty:first-child::before) {
   content: attr(data-placeholder);
   float: left;
diff --git a/renderer/src/features/chapters/chapterFormatting.test.mjs b/renderer/src/features/chapters/chapterFormatting.test.mjs
new file mode 100644
index 00000000..4b09f606
--- /dev/null
+++ b/renderer/src/features/chapters/chapterFormatting.test.mjs
@@ -0,0 +1,64 @@
+import assert from 'node:assert/strict'
+import test from 'node:test'
+import { formatChapterEditorDocument } from './chapterFormatting.ts'
+
+test('一键排版将段内换行拆为段落并删除空段', () => {
+  const result = formatChapterEditorDocument({
+    type: 'doc',
+    content: [
+      {
+        type: 'paragraph',
+        content: [
+          { type: 'text', text: '　　第一段  ' },
+          { type: 'hardBreak' },
+          { type: 'hardBreak' },
+          { type: 'text', text: '  第二段　' }
+        ]
+      },
+      { type: 'paragraph' }
+    ]
+  })
+
+  assert.equal(result.changed, true)
+  assert.equal(result.paragraphCount, 2)
+  assert.deepEqual(result.document.content, [
+    { type: 'paragraph', content: [{ type: 'text', text: '第一段' }] },
+    { type: 'paragraph', content: [{ type: 'text', text: '第二段' }] }
+  ])
+})
+
+test('一键排版保留行内格式和非段落节点', () => {
+  const heading = { type: 'heading', attrs: { level: 2 }, content: [{ type: 'text', text: '场景一' }] }
+  const result = formatChapterEditorDocument({
+    type: 'doc',
+    content: [
+      heading,
+      {
+        type: 'paragraph',
+        content: [
+          { type: 'text', text: '  重要', marks: [{ type: 'bold' }] },
+          { type: 'text', text: '内容', marks: [{ type: 'underline' }] }
+        ]
+      }
+    ]
+  })
+
+  assert.deepEqual(result.document.content?.[0], heading)
+  assert.deepEqual(result.document.content?.[1]?.content, [
+    { type: 'text', text: '重要', marks: [{ type: 'bold' }] },
+    { type: 'text', text: '内容', marks: [{ type: 'underline' }] }
+  ])
+})
+
+test('空正文排版后仍保留一个可编辑段落', () => {
+  const result = formatChapterEditorDocument({
+    type: 'doc',
+    content: [{ type: 'paragraph' }, { type: 'paragraph' }]
+  })
+
+  assert.deepEqual(result.document, {
+    type: 'doc',
+    content: [{ type: 'paragraph' }]
+  })
+  assert.equal(result.paragraphCount, 0)
+})
diff --git a/renderer/src/features/chapters/chapterFormatting.ts b/renderer/src/features/chapters/chapterFormatting.ts
new file mode 100644
index 00000000..1cda982a
--- /dev/null
+++ b/renderer/src/features/chapters/chapterFormatting.ts
@@ -0,0 +1,115 @@
+import type { JSONContent } from '@tiptap/core'
+
+export type ChapterFormatResult = {
+  document: JSONContent
+  changed: boolean
+  paragraphCount: number
+}
+
+/**
+ * 整理正文的块级结构：
+ * - 段落内的硬换行拆为独立段落；
+ * - 删除多余空段和段首/段尾手工空格；
+ * - 保留文字的 marks（加粗、下划线等）和非段落块节点。
+ *
+ * 首行缩进和段间距由编辑器 CSS 统一呈现，避免在正文中插入
+ * 全角空格或空段落，导致字数和导出内容被污染。
+ */
+export function formatChapterEditorDocument(document: JSONContent): ChapterFormatResult {
+  const sourceContent = Array.isArray(document.content) ? document.content : []
+  const content: JSONContent[] = []
+  let paragraphCount = 0
+
+  for (const node of sourceContent) {
+    if (node.type !== 'paragraph') {
+      content.push(node)
+      continue
+    }
+
+    const paragraphs = splitParagraphNode(node)
+    paragraphCount += paragraphs.length
+    content.push(...paragraphs)
+  }
+
+  if (content.length === 0) {
+    content.push({ type: 'paragraph' })
+  }
+
+  const formatted: JSONContent = {
+    ...document,
+    type: document.type || 'doc',
+    content
+  }
+
+  return {
+    document: formatted,
+    changed: JSON.stringify(formatted) !== JSON.stringify(document),
+    paragraphCount
+  }
+}
+
+function splitParagraphNode(node: JSONContent): JSONContent[] {
+  const segments: JSONContent[][] = [[]]
+
+  for (const inline of node.content ?? []) {
+    if (inline.type === 'hardBreak') {
+      segments.push([])
+      continue
+    }
+
+    if (inline.type === 'text' && typeof inline.text === 'string' && /[\r\n]/.test(inline.text)) {
+      const parts = inline.text.replace(/\r\n?/g, '\n').split('\n')
+      parts.forEach((part, index) => {
+        if (index > 0) segments.push([])
+        if (part) segments[segments.length - 1].push({ ...inline, text: part })
+      })
+      continue
+    }
+
+    segments[segments.length - 1].push(inline)
+  }
+
+  return segments
+    .map(trimInlineWhitespace)
+    .filter((segment) => hasVisibleInlineContent(segment))
+    .map((segment) => ({
+      ...node,
+      content: segment
+    }))
+}
+
+function trimInlineWhitespace(content: JSONContent[]): JSONContent[] {
+  const trimmed = content.map((node) => ({ ...node }))
+
+  for (let index = 0; index < trimmed.length; index += 1) {
+    const node = trimmed[index]
+    if (node.type !== 'text' || typeof node.text !== 'string') continue
+    node.text = node.text.replace(/^[\s\u3000]+/u, '')
+    if (!node.text) {
+      trimmed.splice(index, 1)
+      index -= 1
+      continue
+    }
+    break
+  }
+
+  for (let index = trimmed.length - 1; index >= 0; index -= 1) {
+    const node = trimmed[index]
+    if (node.type !== 'text' || typeof node.text !== 'string') continue
+    node.text = node.text.replace(/[\s\u3000]+$/u, '')
+    if (!node.text) {
+      trimmed.splice(index, 1)
+      continue
+    }
+    break
+  }
+
+  return trimmed
+}
+
+function hasVisibleInlineContent(content: JSONContent[]): boolean {
+  return content.some((node) => {
+    if (node.type === 'text') return Boolean(node.text?.trim())
+    return node.type !== 'hardBreak'
+  })
+}