Pneumatic suction jig

The invention relates to the field of jigs, in particular to a pneumatic suction jig which comprises a bottom plate, a fixing block is arranged on one side of the bottom plate, an insertion hole for testing is formed in one end face of the fixing block, a pushing unit is arranged on the other side of the bottom plate and comprises a moving block, a groove penetrating front and back is formed in the middle of the moving block, and traction blocks are symmetrically and fixedly connected to the lower end of the moving block. The traction blocks slidably penetrate through sliding holes formed in the lower plate of the bottom plate and are fixedly connected with the output ends of air cylinders, and the air cylinders are fixedly connected to the lower surface of the bottom plate. Baffles are symmetrically arranged at the rear end of the groove, a suction opening is formed in the inner surface of the groove, and the suction opening is communicated with a pipe body arranged on the side wall of the traction block. Th