diff --git a/src/main/services/chat-service.ts b/src/main/services/chat-service.ts
index 95fb5dc..13801b0 100644
--- a/src/main/services/chat-service.ts
+++ b/src/main/services/chat-service.ts
@@ -180,6 +180,8 @@ export interface GroupSnapshot {
   roomId: string
   memberCount: number
   groupName?: string
+  /** 只读 roominfo（contact.db / chatroom）；字段可能随版本缺失。 */
+  roomInfo?: GroupRoomInfo
   members: {
     wxid: string
     nickname: string
@@ -190,6 +192,18 @@ export interface GroupSnapshot {
   }[]
 }
 
+/** 群 roominfo 只读字段（列名兼容多版本；缺失则为 undefined）。 */
+export interface GroupRoomInfo {
+  roomId: string
+  owner?: string
+  announcement?: string
+  announcementEditor?: string
+  maxMemberCount?: number
+  chatName?: string
+  openImAccountType?: string
+  isOpenIm?: boolean
+}
+
 export interface GroupMembershipSnapshot {
   roomId: string
   memberIds: string[]
@@ -1007,7 +1021,7 @@ export function getGroupSnapshot(userMd5: string): GroupSnapshot | null {
       avatar: member.m_nsHeadImgUrl || ''
     }))
 
-  return { roomId, memberCount: members.length, members }
+  return { roomId, memberCount: members.length, members, roomInfo: wcdb4Client.getRoomInfo(roomId) || undefined }
 }
 
 export async function getGroupSnapshotAsync(userMd5: string): Promise<GroupSnapshot | null> {
@@ -1032,7 +1046,8 @@ export async function getGroupSnapshotAsync(userMd5: string): Promise<GroupSnaps
     roomId,
     groupName: session?.nickname || undefined,
     memberCount: members.length,
-    members
+    members,
+    roomInfo: (await wcdb4Client.getRoomInfoAsync(roomId)) || undefined
   }
 }
 
diff --git a/src/main/wcdb4-client.ts b/src/main/wcdb4-client.ts
index 527f83c..69e2bb5 100644
--- a/src/main/wcdb4-client.ts
+++ b/src/main/wcdb4-client.ts
@@ -5,6 +5,51 @@ import crypto from 'crypto'
 import { createRequire } from 'module'
 import { createConnection, Socket } from 'net'
 import { getResourceRoots } from './resource-paths'
+
+export type RoomInfoRow = {
+  roomId: string
+  owner?: string
+  announcement?: string
+  announcementEditor?: string
+  maxMemberCount?: number
+  chatName?: string
+  openImAccountType?: string
+  isOpenIm?: boolean
+}
+
+function pickString(row: Record<string, unknown>, keys: string[]): string | undefined {
+  for (const key of keys) {
+    const value = row[key]
+    if (typeof value === 'string' && value.trim()) return value.trim()
+    if (typeof value === 'number' && Number.isFinite(value)) return String(value)
+  }
+  return undefined
+}
+
+export function normalizeRoomInfoRow(chatroomId: string, row: Record<string, unknown>): RoomInfoRow {
+  const openImAccountType =
+    pickString(row, ['openim_acct_type', 'openimAcctType', 'openim_type']) || undefined
+  const maxRaw = pickString(row, ['max_member_count', 'maxMemberCount', 'member_max'])
+  return {
+    roomId: chatroomId,
+    owner: pickString(row, ['roomowner', 'room_owner', 'owner', 'owner_id']),
+    announcement: pickString(row, [
+      'textannouncement',
+      'announcement',
+      'announcement_',
+      'chatroomannouncement'
+    ]),
+    announcementEditor: pickString(row, [
+      'announcement_editor',
+      'announcement_editor_',
+      'announcementeditor'
+    ]),
+    maxMemberCount: maxRaw && Number.isFinite(Number(maxRaw)) ? Number(maxRaw) : undefined,
+    chatName: pickString(row, ['chatroomnick', 'chat_name', 'chatroom_name', 'displayname']),
+    openImAccountType,
+    isOpenIm: openImAccountType ? openImAccountType !== '0' && openImAccountType !== '' : undefined
+  }
+}
 import { wcdbDebugLog } from './wcdb-debug'
 import type { ImageMessageCountProbe } from '../shared/image-text-index'
 import { imageTextWindowToSeconds } from '../shared/image-text-index'
@@ -2678,6 +2723,42 @@ export class Wcdb4Client {
     return this.accountRoot
   }
 
+
+  /**
+   * 只读 roominfo（contact.db / chatroom 或兼容列名）。
+   */
+  getRoomInfo(chatroomId: string): RoomInfoRow | null {
+    if (!this.wcdbExecQuery || !chatroomId.endsWith('@chatroom')) return null
+    const escaped = chatroomId.replace(/'/g, "''")
+    const sql = `SELECT * FROM chatroom WHERE chatroomname = '${escaped}' LIMIT 1`
+    try {
+      const rows = this.callJson<Record<string, unknown>[]>((handle, outJson) =>
+        this.wcdbExecQuery!(handle, 'contact', '', sql, outJson)
+      )
+      return rows?.[0] ? normalizeRoomInfoRow(chatroomId, rows[0]) : null
+    } catch {
+      return null
+    }
+  }
+
+  async getRoomInfoAsync(chatroomId: string): Promise<RoomInfoRow | null> {
+    if (!this.wcdbExecQuery || !chatroomId.endsWith('@chatroom')) return null
+    const escaped = chatroomId.replace(/'/g, "''")
+    const sql = `SELECT * FROM chatroom WHERE chatroomname = '${escaped}' LIMIT 1`
+    try {
+      const rows = await this.callJsonAsync<Record<string, unknown>[]>(
+        this.wcdbExecQuery as unknown as KoffiAsyncFunction,
+        'contact',
+        '',
+        sql
+      )
+      return rows?.[0] ? normalizeRoomInfoRow(chatroomId, rows[0]) : null
+    } catch (error) {
+      console.warn('[WCDB4] getRoomInfoAsync failed:', error)
+      return null
+    }
+  }
+
   /** 只读列收藏（favorite.db / fav_db_item），供导出与搜索。 */
   async listFavoriteItems(limit = 200): Promise<Record<string, unknown>[]> {
     if (!this.wcdbExecQuery) return []
diff --git a/tests/unit/room-info.test.ts b/tests/unit/room-info.test.ts
new file mode 100644
index 0000000..6767bc7
--- /dev/null
+++ b/tests/unit/room-info.test.ts
@@ -0,0 +1,31 @@
+import { describe, expect, it } from 'vitest'
+import { normalizeRoomInfoRow } from '../../src/main/wcdb4-client'
+
+describe('normalizeRoomInfoRow', () => {
+  it('maps versioned chatroom column aliases', () => {
+    expect(
+      normalizeRoomInfoRow('123@chatroom', {
+        chatroomname: '123@chatroom',
+        roomowner: 'wxid_owner',
+        textannouncement: '群公告',
+        announcement_editor_: 'wxid_editor',
+        max_member_count: 500,
+        chatroomnick: '测试群',
+        openim_acct_type: '2'
+      })
+    ).toEqual({
+      roomId: '123@chatroom',
+      owner: 'wxid_owner',
+      announcement: '群公告',
+      announcementEditor: 'wxid_editor',
+      maxMemberCount: 500,
+      chatName: '测试群',
+      openImAccountType: '2',
+      isOpenIm: true
+    })
+    expect(normalizeRoomInfoRow('9@chatroom', { room_owner: 'wxid_b' })).toMatchObject({
+      owner: 'wxid_b',
+      isOpenIm: undefined
+    })
+  })
+})