diff --git a/game/builtin/room_seat.go b/game/builtin/room_seat.go
index 283c070..0683feb 100644
--- a/game/builtin/room_seat.go
+++ b/game/builtin/room_seat.go
@@ -172,6 +172,15 @@ func (slf *RoomSeat[PlayerID, Player]) GetSeatInfoWithPlayerIDMap() map[PlayerID
 	return slf.seatPS.Map()
 }
 
+func (slf *RoomSeat[PlayerID, Player]) GetFirstSeat() int {
+	for seat, playerId := range slf.seatSP {
+		if playerId != nil {
+			return seat
+		}
+	}
+	return -1
+}
+
 func (slf *RoomSeat[PlayerID, Player]) GetNextSeat(seat int) int {
 	l := len(slf.seatSP)
 	if l == 0 || seat >= l || seat < 0 {
diff --git a/game/room_seat.go b/game/room_seat.go
index 8b81cb0..05cb24c 100644
--- a/game/room_seat.go
+++ b/game/room_seat.go
@@ -26,6 +26,8 @@ type RoomSeat[PlayerID comparable, P Player[PlayerID]] interface {
 	GetSeatInfoMapVacancy() map[int]*PlayerID
 	// GetSeatInfoWithPlayerIDMap 获取座位信息，将以玩家ID作为key
 	GetSeatInfoWithPlayerIDMap() map[PlayerID]int
+	// GetFirstSeat 获取第一个非空缺座位号，不存在时将返回-1
+	GetFirstSeat() int
 	// GetNextSeat 获取下一个座位号，空缺的位置将会被跳过
 	//  - 超出范围将返回-1
 	//  - 当没有下一个座位号时将始终返回本身