Target changing machine capable of winding and unwinding roll paper in front-back mode and achieving accurate paper feeding and shooting system

The invention relates to a front and rear target changing machine for winding and unwinding roll paper and accurate paper feeding and a shooting system, belongs to the technical field of shooting equipment, and solves the problems of inconvenience in paper winding and unwinding and inaccurate target paper feeding in the prior art by adopting a front and rear layout and an accurate paper feeding mechanism. The target changing machine comprises a paper placing box body, a paper collecting box body, a paper placing device, a paper collecting device, a back plate assembly, target paper, a precise paper feeding mechanism and a system control unit. The paper placing box body and the paper collecting box body are arranged in parallel front and back; the back plate assembly is arranged between the paper placing box body and the paper collecting box body and is fixedly arranged above the two box bodies; the paper placing equipment is arranged in the paper placing box body, and the paper collecting equipment is arrange