diff --git a/binary/jce/structs.go b/binary/jce/structs.go
index acdf0683..246214fb 100644
--- a/binary/jce/structs.go
+++ b/binary/jce/structs.go
@@ -529,6 +529,14 @@ type (
 		Version     int32    `jceId:"2"`
 		ReqServices [][]byte `jceId:"3"` // busi
 	}
+
+	DelFriendReq struct {
+		IJceStruct
+		Uin     int64 `jceId:"0"`
+		DelUin  int64 `jceId:"1"`
+		DelType byte  `jceId:"2"`
+		Version int32 `jceId:"3"`
+	}
 )
 
 func (pkt *RequestPacket) ToBytes() []byte {
@@ -838,3 +846,9 @@ func (pkt *SvcReqRegisterNew) ToBytes() []byte {
 	w.WriteJceStructRaw(pkt)
 	return w.Bytes()
 }
+
+func (pkt *DelFriendReq) ToBytes() []byte {
+	w := NewJceWriter()
+	w.WriteJceStructRaw(pkt)
+	return w.Bytes()
+}
diff --git a/client/builders.go b/client/builders.go
index c8e9dcf5..666852fe 100644
--- a/client/builders.go
+++ b/client/builders.go
@@ -651,6 +651,31 @@ func (c *QQClient) buildSummaryCardRequestPacket(target int64) (uint16, []byte)
 	return seq, packet
 }
 
+// friendlist.delFriend
+func (c *QQClient) buildFriendDeletePacket(target int64) (uint16, []byte) {
+	seq := c.nextSeq()
+	req := &jce.DelFriendReq{
+		Uin:     c.Uin,
+		DelUin:  target,
+		DelType: 2,
+		Version: 1,
+	}
+	buf := &jce.RequestDataVersion3{
+		Map: map[string][]byte{"DF": packUniRequestData(req.ToBytes())},
+	}
+	pkt := &jce.RequestPacket{
+		IVersion:     3,
+		IRequestId:   c.nextPacketSeq(),
+		SServantName: "mqq.IMService.FriendListServiceServantObj",
+		SFuncName:    "DelFriendReq",
+		SBuffer:      buf.ToBytes(),
+		Context:      make(map[string]string),
+		Status:       make(map[string]string),
+	}
+	packet := packets.BuildUniPacket(c.Uin, seq, "friendlist.delFriend", 1, c.OutGoingPacketSessionId, []byte{}, c.sigInfo.d2Key, pkt.ToBytes())
+	return seq, packet
+}
+
 // friendlist.GetTroopListReqV2
 func (c *QQClient) buildGroupListRequestPacket(vecCookie []byte) (uint16, []byte) {
 	seq := c.nextSeq()
@@ -665,10 +690,8 @@ func (c *QQClient) buildGroupListRequestPacket(vecCookie []byte) (uint16, []byte
 		VersionNum:       1,
 		GetLongGroupName: 1,
 	}
-	b := append([]byte{0x0A}, req.ToBytes()...)
-	b = append(b, 0x0B)
 	buf := &jce.RequestDataVersion3{
-		Map: map[string][]byte{"GetTroopListReqV2Simplify": b},
+		Map: map[string][]byte{"GetTroopListReqV2Simplify": packUniRequestData(req.ToBytes())},
 	}
 	pkt := &jce.RequestPacket{
 		IVersion:     3,
diff --git a/client/client.go b/client/client.go
index cb162a3d..90c03ef7 100644
--- a/client/client.go
+++ b/client/client.go
@@ -141,6 +141,7 @@ var decoders = map[string]func(*QQClient, *incomingPacketInfo, []byte) (interfac
 	"MessageSvc.PushForceOffline":                  decodeForceOfflinePacket,
 	"PbMessageSvc.PbMsgWithDraw":                   decodeMsgWithDrawResponse,
 	"friendlist.getFriendGroupList":                decodeFriendGroupListResponse,
+	"friendlist.delFriend":                         decodeFriendDeleteResponse,
 	"friendlist.GetTroopListReqV2":                 decodeGroupListResponse,
 	"friendlist.GetTroopMemberListReq":             decodeGroupMemberListResponse,
 	"group_member_card.get_group_member_card_info": decodeGroupMemberInfoResponse,
@@ -715,6 +716,14 @@ func (c *QQClient) FindFriend(uin int64) *FriendInfo {
 	return nil
 }
 
+func (c *QQClient) DeleteFriend(uin int64) error {
+	if c.FindFriend(uin) == nil {
+		return errors.New("friend not found")
+	}
+	_, err := c.sendAndWait(c.buildFriendDeletePacket(uin))
+	return errors.Wrap(err, "delete friend error")
+}
+
 func (c *QQClient) FindGroupByUin(uin int64) *GroupInfo {
 	for _, g := range c.GroupList {
 		f := g
diff --git a/client/decoders.go b/client/decoders.go
index 79493046..fecdef5d 100644
--- a/client/decoders.go
+++ b/client/decoders.go
@@ -481,6 +481,19 @@ func decodeFriendGroupListResponse(_ *QQClient, _ *incomingPacketInfo, payload [
 	return rsp, nil
 }
 
+// friendlist.delFriend
+func decodeFriendDeleteResponse(_ *QQClient, _ *incomingPacketInfo, payload []byte) (interface{}, error) {
+	request := &jce.RequestPacket{}
+	request.ReadFrom(jce.NewJceReader(payload))
+	data := &jce.RequestDataVersion3{}
+	data.ReadFrom(jce.NewJceReader(request.SBuffer))
+	r := jce.NewJceReader(data.Map["DFRESP"][1:])
+	if ret := r.ReadInt32(2); ret != 0 {
+		return nil, errors.Errorf("delete friend error: %v", ret)
+	}
+	return nil, nil
+}
+
 // friendlist.GetTroopListReqV2
 func decodeGroupListResponse(c *QQClient, _ *incomingPacketInfo, payload []byte) (interface{}, error) {
 	request := &jce.RequestPacket{}