diff --git a/helper.go b/helper.go
index 31a765f..7af0020 100644
--- a/helper.go
+++ b/helper.go
@@ -27,3 +27,23 @@ func getThisFuncName() string {
 func getCallerFuncName() string {
 	return getFuncNameWithSkip(2)
 }
+
+// MessageEscape 消息转义
+//
+// https://bot.q.qq.com/wiki/develop/api/openapi/message/message_format.html
+func MessageEscape(text string) string {
+	text = strings.ReplaceAll(text, "&", "&")
+	text = strings.ReplaceAll(text, "<", "&lt;")
+	text = strings.ReplaceAll(text, ">", "&gt;")
+	return text
+}
+
+// MessageUnescape 消息解转义
+//
+// https://bot.q.qq.com/wiki/develop/api/openapi/message/message_format.html
+func MessageUnescape(text string) string {
+	text = strings.ReplaceAll(text, "&amp;", "&")
+	text = strings.ReplaceAll(text, "&lt;", "<")
+	text = strings.ReplaceAll(text, "&gt;", ">")
+	return text
+}
diff --git a/openapi.go b/openapi.go
index 6c3e6d2..eb7f0c4 100644
--- a/openapi.go
+++ b/openapi.go
@@ -103,7 +103,7 @@ func (bot *Bot) DeleteOpenAPI(ep, contenttype string, body io.Reader) error {
 	return nil
 }
 
-//go:generate go run codegen/postopenapiof/main.go Channel GuildRoleCreate Message
+//go:generate go run codegen/postopenapiof/main.go Channel GuildRoleCreate Message DMS
 
 // PostOpenAPI 从 ep 得到 json 结构化数据返回值写到 ptr, ptr 除 Slice 外必须在开头继承 CodeMessageBase
 func (bot *Bot) PostOpenAPI(ep, contenttype string, ptr any, body io.Reader) error {
diff --git a/openapi_codegen_postopenapiof.go b/openapi_codegen_postopenapiof.go
index 4ee7517..7d305e5 100644
--- a/openapi_codegen_postopenapiof.go
+++ b/openapi_codegen_postopenapiof.go
@@ -43,3 +43,15 @@ func (bot *Bot) postOpenAPIofMessage(ep, contenttype string, body io.Reader) (*M
 	}
 	return &resp.Message, err
 }
+
+func (bot *Bot) postOpenAPIofDMS(ep, contenttype string, body io.Reader) (*DMS, error) {
+	resp := &struct {
+		CodeMessageBase
+		DMS
+	}{}
+	err := bot.PostOpenAPI(ep, contenttype, resp, body)
+	if err != nil {
+		err = errors.Wrap(err, getCallerFuncName())
+	}
+	return &resp.DMS, err
+}
diff --git a/openapi_dms.go b/openapi_dms.go
new file mode 100644
index 0000000..1d0b650
--- /dev/null
+++ b/openapi_dms.go
@@ -0,0 +1,38 @@
+package nano
+
+// DMS 私信会话对象
+//
+// https://bot.q.qq.com/wiki/develop/api/openapi/dms/model.html
+type DMS struct {
+	GuildID    string `json:"guild_id"`
+	ChannelID  string `json:"channel_id"`
+	CreateTime string `json:"create_time"` // 创建私信会话时间戳
+}
+
+// CreatePrivateChat 机器人和在同一个频道内的成员创建私信会话
+//
+// https://bot.q.qq.com/wiki/develop/api/openapi/dms/post_dms.html
+func (bot *Bot) CreatePrivateChat(guildid, userid string) (*DMS, error) {
+	return bot.postOpenAPIofDMS("/users/@me/dms", "", WriteBodyFromJSON(&struct {
+		R string `json:"recipient_id"`
+		S string `json:"source_guild_id"`
+	}{userid, guildid}))
+}
+
+// PostMessageToUser 发送私信消息，前提是已经创建了私信会话
+//
+// https://bot.q.qq.com/wiki/develop/api/openapi/dms/post_dms_messages.html
+//
+// - 私信的 guild_id 在创建私信会话时以及私信消息事件中获取
+func (bot *Bot) PostMessageToUser(id string, content *MessagePost) (*Message, error) {
+	return bot.postMessageTo("/dms/"+id+"/messages", content)
+}
+
+// DeleteMessageOfUser 撤回私信频道 guild_id 中 message_id 指定的私信消息, 只能用于撤回机器人自己发送的私信
+//
+// https://bot.q.qq.com/wiki/develop/api/openapi/dms/delete_dms.html
+func (bot *Bot) DeleteMessageOfUser(guildid, messageid string, hidetip bool) error {
+	return bot.DeleteOpenAPI(WriteHTTPQueryIfNotNil("/dms/"+guildid+"/messages/"+messageid,
+		"hidetip", hidetip,
+	), "", nil)
+}
diff --git a/openapi_message.go b/openapi_message.go
index cceae1c..d089b36 100644
--- a/openapi_message.go
+++ b/openapi_message.go
@@ -3,7 +3,6 @@ package nano
 import (
 	"encoding/json"
 	"reflect"
-	"strings"
 	"time"
 
 	"github.com/pkg/errors"
@@ -126,32 +125,9 @@ type MessagePost struct {
 	KeyBoard         *MessageKeyboard  `json:"keyboard,omitempty"`
 }
 
-// MessageEscape 消息转义
-//
-// https://bot.q.qq.com/wiki/develop/api/openapi/message/message_format.html
-func MessageEscape(text string) string {
-	text = strings.ReplaceAll(text, "&", "&amp;")
-	text = strings.ReplaceAll(text, "<", "&lt;")
-	text = strings.ReplaceAll(text, ">", "&gt;")
-	return text
-}
-
-// MessageUnescape 消息解转义
-//
-// https://bot.q.qq.com/wiki/develop/api/openapi/message/message_format.html
-func MessageUnescape(text string) string {
-	text = strings.ReplaceAll(text, "&amp;", "&")
-	text = strings.ReplaceAll(text, "&lt;", "<")
-	text = strings.ReplaceAll(text, "&gt;", ">")
-	return text
-}
-
-// PostMessageToChannel 向 channel_id 指定的子频道发送消息
-//
-// https://bot.q.qq.com/wiki/develop/api/openapi/message/post_messages.html
-func (bot *Bot) PostMessageToChannel(id string, content *MessagePost) (*Message, error) {
+func (bot *Bot) postMessageTo(ep string, content *MessagePost) (*Message, error) {
 	if content.ImageFile == "" {
-		return bot.postOpenAPIofMessage("/channels/"+id+"/messages", "", WriteBodyFromJSON(content))
+		return bot.postOpenAPIofMessage(ep, "", WriteBodyFromJSON(content))
 	}
 	x := reflect.ValueOf(content).Elem()
 	t := x.Type()
@@ -183,7 +159,14 @@ func (bot *Bot) PostMessageToChannel(id string, content *MessagePost) (*Message,
 	if err != nil {
 		return nil, errors.Wrap(err, getThisFuncName())
 	}
-	return bot.postOpenAPIofMessage("/channels/"+id+"/messages", contenttype, body)
+	return bot.postOpenAPIofMessage(ep, contenttype, body)
+}
+
+// PostMessageToChannel 向 channel_id 指定的子频道发送消息
+//
+// https://bot.q.qq.com/wiki/develop/api/openapi/message/post_messages.html
+func (bot *Bot) PostMessageToChannel(id string, content *MessagePost) (*Message, error) {
+	return bot.postMessageTo("/channels/"+id+"/messages", content)
 }
 
 // DeleteMessageInChannel 回子频道 channel_id 下的消息 message_id