diff --git a/client/builders.go b/client/builders.go
index eb2e178d..bd9ddb18 100644
--- a/client/builders.go
+++ b/client/builders.go
@@ -1240,3 +1240,21 @@ func (c *QQClient) buildAppInfoRequestPacket(id string) (uint16, []byte) {
 	packet := packets.BuildUniPacket(c.Uin, seq, "LightAppSvc.mini_app_info.GetAppInfoById", 1, c.OutGoingPacketSessionId, EmptyBytes, c.sigInfo.d2Key, payload)
 	return seq, packet
 }
+
+func (c *QQClient) buildWordSegmentationPacket(data []byte) (uint16, []byte) {
+	seq := c.nextSeq()
+	body := &oidb.D79ReqBody{
+		Uin:     uint64(c.Uin),
+		Content: data,
+		Qua:     []byte("and_537065262_8.4.5"),
+	}
+	b, _ := proto.Marshal(body)
+	req := &oidb.OIDBSSOPkg{
+		Command:     3449,
+		ServiceType: 1,
+		Bodybuffer:  b,
+	}
+	payload, _ := proto.Marshal(req)
+	packet := packets.BuildUniPacket(c.Uin, seq, "OidbSvc.0xd79", 1, c.OutGoingPacketSessionId, EmptyBytes, c.sigInfo.d2Key, payload)
+	return seq, packet
+}
diff --git a/client/client.go b/client/client.go
index fb07eb42..246ce5b3 100644
--- a/client/client.go
+++ b/client/client.go
@@ -146,6 +146,7 @@ func NewClientMd5(uin int64, passwordMd5 [16]byte) *QQClient {
 			"OidbSvc.0x6d6_2":                              decodeOIDB6d6Response,
 			"OidbSvc.0x88d_0":                              decodeGroupInfoResponse,
 			"OidbSvc.0xe07_0":                              decodeImageOcrResponse,
+			"OidbSvc.0xd79":                                decodeWordSegmentation,
 			"SummaryCard.ReqSummaryCard":                   decodeSummaryCardResponse,
 			"PttCenterSvr.ShortVideoDownReq":               decodePttShortVideoDownResponse,
 			"LightAppSvc.mini_app_info.GetAppInfoById":     decodeAppInfoResponse,
@@ -256,6 +257,21 @@ func (c *QQClient) GetGroupHonorInfo(groupCode int64, honorType HonorType) (*Gro
 	return &ret, nil
 }
 
+func (c *QQClient) GetWordSegmentation(text string) ([]string, error) {
+	rsp, err := c.sendAndWait(c.buildWordSegmentationPacket([]byte(text)))
+	if err != nil {
+		return nil, err
+	}
+	if data, ok := rsp.([][]byte); ok {
+		var ret []string
+		for _, val := range data {
+			ret = append(ret, string(val))
+		}
+		return ret, nil
+	}
+	return nil, errors.New("decode error")
+}
+
 func (c *QQClient) GetSummaryInfo(target int64) (*SummaryCardInfo, error) {
 	rsp, err := c.sendAndWait(c.buildSummaryCardRequestPacket(target))
 	if err != nil {
diff --git a/client/decoders.go b/client/decoders.go
index 963af379..29d3c0e0 100644
--- a/client/decoders.go
+++ b/client/decoders.go
@@ -1037,6 +1037,22 @@ func decodeMultiApplyDownResponse(c *QQClient, _ uint16, payload []byte) (interf
 	return &mt, nil
 }
 
+// OidbSvc.0xd79
+func decodeWordSegmentation(_ *QQClient, _ uint16, payload []byte) (interface{}, error) {
+	pkg := oidb.OIDBSSOPkg{}
+	rsp := &oidb.D79RspBody{}
+	if err := proto.Unmarshal(payload, &pkg); err != nil {
+		return nil, err
+	}
+	if err := proto.Unmarshal(pkg.Bodybuffer, rsp); err != nil {
+		return nil, err
+	}
+	if rsp.Content != nil {
+		return rsp.Content.SliceContent, nil
+	}
+	return nil, errors.New("no word receive")
+}
+
 // OidbSvc.0x6d6_2
 func decodeOIDB6d6Response(c *QQClient, _ uint16, payload []byte) (interface{}, error) {
 	pkg := oidb.OIDBSSOPkg{}
diff --git a/client/pb/oidb/oidb0xD79.proto b/client/pb/oidb/oidb0xD79.proto
new file mode 100644
index 00000000..4baf540c
--- /dev/null
+++ b/client/pb/oidb/oidb0xD79.proto
@@ -0,0 +1,25 @@
+syntax = "proto3";
+
+option go_package = ".;oidb";
+
+message D79ReqBody {
+  uint64 seq = 1;
+  uint64 uin = 2;
+  uint32 compress_flag = 3;
+  bytes content = 4;
+  uint64 sender_uin = 5;
+  bytes qua = 6;
+  bytes word_ext = 7;
+}
+
+message D79RspBody {
+  uint32 ret = 1;
+  uint64 seq = 2;
+  uint64 uin = 3;
+  uint32 compress_flag = 4;
+  D79Content content = 5;
+}
+
+message D79Content {
+  repeated bytes slice_content = 1;
+}
\ No newline at end of file
diff --git a/client/pb/oidb/oidb0xd79.pb.go b/client/pb/oidb/oidb0xd79.pb.go
new file mode 100644
index 00000000..18540289
--- /dev/null
+++ b/client/pb/oidb/oidb0xd79.pb.go
@@ -0,0 +1,369 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.25.0
+// 	protoc        v3.13.0
+// source: oidb0xD79.proto
+
+package oidb
+
+import (
+	proto "github.com/golang/protobuf/proto"
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	sync "sync"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+// This is a compile-time assertion that a sufficiently up-to-date version
+// of the legacy proto package is being used.
+const _ = proto.ProtoPackageIsVersion4
+
+type D79ReqBody struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Seq          uint64 `protobuf:"varint,1,opt,name=seq,proto3" json:"seq,omitempty"`
+	Uin          uint64 `protobuf:"varint,2,opt,name=uin,proto3" json:"uin,omitempty"`
+	CompressFlag uint32 `protobuf:"varint,3,opt,name=compress_flag,json=compressFlag,proto3" json:"compress_flag,omitempty"`
+	Content      []byte `protobuf:"bytes,4,opt,name=content,proto3" json:"content,omitempty"`
+	SenderUin    uint64 `protobuf:"varint,5,opt,name=sender_uin,json=senderUin,proto3" json:"sender_uin,omitempty"`
+	Qua          []byte `protobuf:"bytes,6,opt,name=qua,proto3" json:"qua,omitempty"`
+	WordExt      []byte `protobuf:"bytes,7,opt,name=word_ext,json=wordExt,proto3" json:"word_ext,omitempty"`
+}
+
+func (x *D79ReqBody) Reset() {
+	*x = D79ReqBody{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_oidb0xD79_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *D79ReqBody) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*D79ReqBody) ProtoMessage() {}
+
+func (x *D79ReqBody) ProtoReflect() protoreflect.Message {
+	mi := &file_oidb0xD79_proto_msgTypes[0]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use D79ReqBody.ProtoReflect.Descriptor instead.
+func (*D79ReqBody) Descriptor() ([]byte, []int) {
+	return file_oidb0xD79_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *D79ReqBody) GetSeq() uint64 {
+	if x != nil {
+		return x.Seq
+	}
+	return 0
+}
+
+func (x *D79ReqBody) GetUin() uint64 {
+	if x != nil {
+		return x.Uin
+	}
+	return 0
+}
+
+func (x *D79ReqBody) GetCompressFlag() uint32 {
+	if x != nil {
+		return x.CompressFlag
+	}
+	return 0
+}
+
+func (x *D79ReqBody) GetContent() []byte {
+	if x != nil {
+		return x.Content
+	}
+	return nil
+}
+
+func (x *D79ReqBody) GetSenderUin() uint64 {
+	if x != nil {
+		return x.SenderUin
+	}
+	return 0
+}
+
+func (x *D79ReqBody) GetQua() []byte {
+	if x != nil {
+		return x.Qua
+	}
+	return nil
+}
+
+func (x *D79ReqBody) GetWordExt() []byte {
+	if x != nil {
+		return x.WordExt
+	}
+	return nil
+}
+
+type D79RspBody struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Ret          uint32      `protobuf:"varint,1,opt,name=ret,proto3" json:"ret,omitempty"`
+	Seq          uint64      `protobuf:"varint,2,opt,name=seq,proto3" json:"seq,omitempty"`
+	Uin          uint64      `protobuf:"varint,3,opt,name=uin,proto3" json:"uin,omitempty"`
+	CompressFlag uint32      `protobuf:"varint,4,opt,name=compress_flag,json=compressFlag,proto3" json:"compress_flag,omitempty"`
+	Content      *D79Content `protobuf:"bytes,5,opt,name=content,proto3" json:"content,omitempty"`
+}
+
+func (x *D79RspBody) Reset() {
+	*x = D79RspBody{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_oidb0xD79_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *D79RspBody) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*D79RspBody) ProtoMessage() {}
+
+func (x *D79RspBody) ProtoReflect() protoreflect.Message {
+	mi := &file_oidb0xD79_proto_msgTypes[1]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use D79RspBody.ProtoReflect.Descriptor instead.
+func (*D79RspBody) Descriptor() ([]byte, []int) {
+	return file_oidb0xD79_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *D79RspBody) GetRet() uint32 {
+	if x != nil {
+		return x.Ret
+	}
+	return 0
+}
+
+func (x *D79RspBody) GetSeq() uint64 {
+	if x != nil {
+		return x.Seq
+	}
+	return 0
+}
+
+func (x *D79RspBody) GetUin() uint64 {
+	if x != nil {
+		return x.Uin
+	}
+	return 0
+}
+
+func (x *D79RspBody) GetCompressFlag() uint32 {
+	if x != nil {
+		return x.CompressFlag
+	}
+	return 0
+}
+
+func (x *D79RspBody) GetContent() *D79Content {
+	if x != nil {
+		return x.Content
+	}
+	return nil
+}
+
+type D79Content struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	SliceContent [][]byte `protobuf:"bytes,1,rep,name=slice_content,json=sliceContent,proto3" json:"slice_content,omitempty"`
+}
+
+func (x *D79Content) Reset() {
+	*x = D79Content{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_oidb0xD79_proto_msgTypes[2]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *D79Content) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*D79Content) ProtoMessage() {}
+
+func (x *D79Content) ProtoReflect() protoreflect.Message {
+	mi := &file_oidb0xD79_proto_msgTypes[2]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use D79Content.ProtoReflect.Descriptor instead.
+func (*D79Content) Descriptor() ([]byte, []int) {
+	return file_oidb0xD79_proto_rawDescGZIP(), []int{2}
+}
+
+func (x *D79Content) GetSliceContent() [][]byte {
+	if x != nil {
+		return x.SliceContent
+	}
+	return nil
+}
+
+var File_oidb0xD79_proto protoreflect.FileDescriptor
+
+var file_oidb0xD79_proto_rawDesc = []byte{
+	0x0a, 0x0f, 0x6f, 0x69, 0x64, 0x62, 0x30, 0x78, 0x44, 0x37, 0x39, 0x2e, 0x70, 0x72, 0x6f, 0x74,
+	0x6f, 0x22, 0xbb, 0x01, 0x0a, 0x0a, 0x44, 0x37, 0x39, 0x52, 0x65, 0x71, 0x42, 0x6f, 0x64, 0x79,
+	0x12, 0x10, 0x0a, 0x03, 0x73, 0x65, 0x71, 0x18, 0x01, 0x20, 0x01, 0x28, 0x04, 0x52, 0x03, 0x73,
+	0x65, 0x71, 0x12, 0x10, 0x0a, 0x03, 0x75, 0x69, 0x6e, 0x18, 0x02, 0x20, 0x01, 0x28, 0x04, 0x52,
+	0x03, 0x75, 0x69, 0x6e, 0x12, 0x23, 0x0a, 0x0d, 0x63, 0x6f, 0x6d, 0x70, 0x72, 0x65, 0x73, 0x73,
+	0x5f, 0x66, 0x6c, 0x61, 0x67, 0x18, 0x03, 0x20, 0x01, 0x28, 0x0d, 0x52, 0x0c, 0x63, 0x6f, 0x6d,
+	0x70, 0x72, 0x65, 0x73, 0x73, 0x46, 0x6c, 0x61, 0x67, 0x12, 0x18, 0x0a, 0x07, 0x63, 0x6f, 0x6e,
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+	0x6e, 0x18, 0x05, 0x20, 0x01, 0x28, 0x04, 0x52, 0x09, 0x73, 0x65, 0x6e, 0x64, 0x65, 0x72, 0x55,
+	0x69, 0x6e, 0x12, 0x10, 0x0a, 0x03, 0x71, 0x75, 0x61, 0x18, 0x06, 0x20, 0x01, 0x28, 0x0c, 0x52,
+	0x03, 0x71, 0x75, 0x61, 0x12, 0x19, 0x0a, 0x08, 0x77, 0x6f, 0x72, 0x64, 0x5f, 0x65, 0x78, 0x74,
+	0x18, 0x07, 0x20, 0x01, 0x28, 0x0c, 0x52, 0x07, 0x77, 0x6f, 0x72, 0x64, 0x45, 0x78, 0x74, 0x22,
+	0x8e, 0x01, 0x0a, 0x0a, 0x44, 0x37, 0x39, 0x52, 0x73, 0x70, 0x42, 0x6f, 0x64, 0x79, 0x12, 0x10,
+	0x0a, 0x03, 0x72, 0x65, 0x74, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0d, 0x52, 0x03, 0x72, 0x65, 0x74,
+	0x12, 0x10, 0x0a, 0x03, 0x73, 0x65, 0x71, 0x18, 0x02, 0x20, 0x01, 0x28, 0x04, 0x52, 0x03, 0x73,
+	0x65, 0x71, 0x12, 0x10, 0x0a, 0x03, 0x75, 0x69, 0x6e, 0x18, 0x03, 0x20, 0x01, 0x28, 0x04, 0x52,
+	0x03, 0x75, 0x69, 0x6e, 0x12, 0x23, 0x0a, 0x0d, 0x63, 0x6f, 0x6d, 0x70, 0x72, 0x65, 0x73, 0x73,
+	0x5f, 0x66, 0x6c, 0x61, 0x67, 0x18, 0x04, 0x20, 0x01, 0x28, 0x0d, 0x52, 0x0c, 0x63, 0x6f, 0x6d,
+	0x70, 0x72, 0x65, 0x73, 0x73, 0x46, 0x6c, 0x61, 0x67, 0x12, 0x25, 0x0a, 0x07, 0x63, 0x6f, 0x6e,
+	0x74, 0x65, 0x6e, 0x74, 0x18, 0x05, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x0b, 0x2e, 0x44, 0x37, 0x39,
+	0x43, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74, 0x52, 0x07, 0x63, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74,
+	0x22, 0x31, 0x0a, 0x0a, 0x44, 0x37, 0x39, 0x43, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74, 0x12, 0x23,
+	0x0a, 0x0d, 0x73, 0x6c, 0x69, 0x63, 0x65, 0x5f, 0x63, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74, 0x18,
+	0x01, 0x20, 0x03, 0x28, 0x0c, 0x52, 0x0c, 0x73, 0x6c, 0x69, 0x63, 0x65, 0x43, 0x6f, 0x6e, 0x74,
+	0x65, 0x6e, 0x74, 0x42, 0x08, 0x5a, 0x06, 0x2e, 0x3b, 0x6f, 0x69, 0x64, 0x62, 0x62, 0x06, 0x70,
+	0x72, 0x6f, 0x74, 0x6f, 0x33,
+}
+
+var (
+	file_oidb0xD79_proto_rawDescOnce sync.Once
+	file_oidb0xD79_proto_rawDescData = file_oidb0xD79_proto_rawDesc
+)
+
+func file_oidb0xD79_proto_rawDescGZIP() []byte {
+	file_oidb0xD79_proto_rawDescOnce.Do(func() {
+		file_oidb0xD79_proto_rawDescData = protoimpl.X.CompressGZIP(file_oidb0xD79_proto_rawDescData)
+	})
+	return file_oidb0xD79_proto_rawDescData
+}
+
+var file_oidb0xD79_proto_msgTypes = make([]protoimpl.MessageInfo, 3)
+var file_oidb0xD79_proto_goTypes = []interface{}{
+	(*D79ReqBody)(nil), // 0: D79ReqBody
+	(*D79RspBody)(nil), // 1: D79RspBody
+	(*D79Content)(nil), // 2: D79Content
+}
+var file_oidb0xD79_proto_depIdxs = []int32{
+	2, // 0: D79RspBody.content:type_name -> D79Content
+	1, // [1:1] is the sub-list for method output_type
+	1, // [1:1] is the sub-list for method input_type
+	1, // [1:1] is the sub-list for extension type_name
+	1, // [1:1] is the sub-list for extension extendee
+	0, // [0:1] is the sub-list for field type_name
+}
+
+func init() { file_oidb0xD79_proto_init() }
+func file_oidb0xD79_proto_init() {
+	if File_oidb0xD79_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_oidb0xD79_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*D79ReqBody); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_oidb0xD79_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*D79RspBody); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_oidb0xD79_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*D79Content); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_oidb0xD79_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   3,
+			NumExtensions: 0,
+			NumServices:   0,
+		},
+		GoTypes:           file_oidb0xD79_proto_goTypes,
+		DependencyIndexes: file_oidb0xD79_proto_depIdxs,
+		MessageInfos:      file_oidb0xD79_proto_msgTypes,
+	}.Build()
+	File_oidb0xD79_proto = out.File
+	file_oidb0xD79_proto_rawDesc = nil
+	file_oidb0xD79_proto_goTypes = nil
+	file_oidb0xD79_proto_depIdxs = nil
+}