The invention provides a mould lifting device with mould lifting disks. The mould lifting device comprises an upper sand box and a lower sand box; the outer side of the lower sand box is provided with more than one mould lifter; and each mould lifter is provided with a mould lifting disk. Each mould lifter comprises a fixed seat fixedly arranged at the outer side of the sand box; the fixed seat is provided with a lifting rod; the lifting rod is rotatably connected with a cross arm; the cross arm is provided with a vertical mould lifting rod; the mould lifting disk is arranged at the bottom end of the mould lifting rod; and the mould lifting disk is detachably provided with more than one conical structure. The mould lifting disk is of a cubic structure, a cuboid structure or a disk structure. Two ends of the lower sand box are provided with handles. The outer side of the sand box is provided with the mould lifters, and a mould is taken out in the vertical direction by the mould lifters, so that the cavity of a sand mould is prevented from being damaged.