The invention relates to a grabbing pneumatic connecting rod arm with a double-paw structure. The grabbing pneumatic connecting rod arm comprises a paw A, a paw B, a shift cylinder seat, a shift cylinder, a mounting plate and the like. The paws A and B have the same structure, and each paw consists of a scissor type connecting rod mechanism and a cylinder bracket. The tail of the shift cylinder and the connecting hole end of the mounting plate are fixedly connected to the same plane end of the cylinder seat, the mounting plate is arranged below the shift cylinder, a single lug hole seat of the mounting plate is hinged to a second connecting seat lug of the paw A through a pin shaft, a first connecting seat lug of the paw A is hinged to a second connecting seat lug of the paw B, and the second connecting seat lug of the paw B is hinged to an extension rod of the shift cylinder through a pin shaft. The telescopic motion of the extension rod of the paw shift cylinder drives the two paws to shift, so that workpieces can be alternately charged or discharged. The grabbing pneumatic connecting rod arm is widely applicable to an automatic part processing production line. The mechanical paws are simple in structure, and a cylinder serves as a driving device, so that the cost is reduced on the premise that the operation can be realized. By using the grabbing pneumatic connecting rod arm, the production time can be shortened, and the production efficiency is improved.