The utility model discloses a lifting device for conveying clothes hangers. The lifting device for conveying clothes hangers comprises a shell, a lifting mechanism and an extruding mechanism, the extruding mechanism is arranged in the shell through the lifting mechanism, the extruding mechanism comprises an extruding screw rod, a machine barrel and a nozzle arranged at the lower end of the machine barrel, an inner cavity matched with the extruding screw rod in shape is arranged in the machine barrel, and the extruding screw rod is arranged at the inner cavity; a first ladder surface is arranged at the lower part of the inner cavity, a second ladder surface corresponding to the first ladder surface is arranged at the outer wall of the lower part of the extruding screw rod, and a non-return ring is arranged between the first ladder surface and second ladder surface. The lifting device for conveying clothes hangers is capable of preventing printing material flowing inversely, and therefore, the diameter of a discharge hole of the nozzle can be reduced, and the precision of the printed product is effectively improved.