The invention discloses a mahjong machine and a mahjong-card stacking pushing method thereof. The mahjong machine comprises a card feeding device and a stacking pushing device. The stacking pushing device comprises a card pushing head, a card bearing table, a card stopping frame and a card storage plate; the card pushing head and the card stopping frame are located on the two adjacent sides of the card bearing table respectively, a card discharging opening of the card feeding device and the card stopping frame are located on the two opposite sides of the card bearing table respectively, the card pushing head and the card storage plate are located on the two opposite sides of the card bearing table respectively, the card feeding device is stopped to feed out a third mahjong card, and the two mahjong cards are stacked and pushed. In the technical scheme, through a same mahjong machine, it can be achieved that the three mahjong cards are stacked and pushed, the two mahjong cards can also be stacked and pushed, the universality of the stacking pushing device and the universality of the mahjong machine are improved, the mold opening cost and the manufacturing cost are reduced, the mahjong machine has more playing methods, and user experiences and the comfortable performance are better.