The invention discloses a novel repeating crossbow machine and a repeating shooting method thereof. The novel repeating crossbow machine comprises a winding mechanism, a bow pressing arm mechanism, aperiodic arrow shifting mechanism, an arrow storing and mounting mechanism and a trigger mechanism. A complete set of operations including automatic arrow mounting, bow drawing and arrow shooting is completed by pushing and pulling a winding rod once; a plurality of arrows are prestored in the arrow storing and mounting mechanism and can fall into an arrow falling groove under the shifting actionof the periodic arrow shifting mechanism to achieve automatic arrow mounting, so that continuous shooting is achieved; labor saving mechanisms are adopted for the winding mechanism and the bow pressing arm mechanism, so that the operation intensity of a user is relieved; and the winding rod collides with a trigger rod when arriving at the bottom, a cord is lifted by the shovel-shaped tail end of the trigger rod, and thus the arrows are shot. Only pushing and pulling operations are needed, simpleness and labor saving are achieved, and automatic repeating shooting can be achieved; and refittingdesign is carried out according to the characteristics of traditional Zhuge repeating crossbows and revolvers, so that the crossbow machine is simpler and easier to use and has strong power.