Labor-saving structure of radiography syringe

The utility model provides a labor-saving structure of a radiography syringe, and aims to solve the technical problem that in the prior art, the requirement for a person pushing the radiography syringe is high. The labor-saving structure comprises a shell, one end of the shell is provided with a clamping groove, and the clamping groove can be connected to a tail plate of a radiography injector; the rod penetrates through the shell, and one end of the screw rod is detachably arranged on a piston of a radiography injector; the two supporting plates are arranged in the shell, through holes are formed in the middles of the supporting plates, and the screw rods penetrate through the through holes; the driving body is located in the through hole, the two ends of the driving body are rotationally connected to the two supporting plates respectively, a threaded hole is formed in the middle of the driving body, the threaded hole is matched with the screw rod, and driving teeth are arranged on the periphery of the exter