diff --git a/openapi_announces.go b/openapi_announces.go
new file mode 100644
index 0000000..1b2360e
--- /dev/null
+++ b/openapi_announces.go
@@ -0,0 +1,38 @@
+package nano
+
+// Announces 公告对象
+//
+// https://bot.q.qq.com/wiki/develop/api/openapi/announces/model.html#announces
+type Announces struct {
+	GuildID           string             `json:"guild_id,omitempty"`
+	ChannelID         string             `json:"channel_id,omitempty"`
+	MessageID         string             `json:"message_id,omitempty"`
+	AnnouncesType     uint32             `json:"announces_type,omitempty"` // 公告类别 0:成员公告 1:欢迎公告，默认成员公告
+	RecommendChannels []RecommendChannel `json:"recommend_channels,omitempty"`
+}
+
+// RecommendChannel 推荐子频道对象
+//
+// https://bot.q.qq.com/wiki/develop/api/openapi/announces/model.html#recommendchannel
+type RecommendChannel struct {
+	ChannelID string `json:"channel_id"`
+	Introduce string `json:"introduce"`
+}
+
+// PostAnnounceInGuild 创建频道全局公告，公告类型分为 消息类型的频道公告 和 推荐子频道类型的频道公告
+//
+// https://bot.q.qq.com/wiki/develop/api/openapi/announces/post_guild_announces.html
+//
+// 会重写 content 为返回值
+func (bot *Bot) PostAnnounceInGuild(id string, content *Announces) error {
+	return bot.PostOpenAPI("/guilds/"+id+"/announces", "", content, WriteBodyFromJSON(content))
+}
+
+// DeleteAnnounceInGuild 删除频道 guild_id 下指定 message_id 的全局公告
+//
+// https://bot.q.qq.com/wiki/develop/api/openapi/announces/delete_guild_announces.html
+//
+// message_id 有值时，会校验 message_id 合法性，若不校验校验 message_id，请将 message_id 设置为 all
+func (bot *Bot) DeleteAnnounceInGuild(guildid, messageid string) error {
+	return bot.DeleteOpenAPI("/guilds/"+guildid+"/announces/"+messageid, "", nil)
+}