The invention discloses robot tongs. The robot tongs comprise a frame, a robot connecting plate and a pair of clamping jaw assemblies used for clamping a product. The robot connecting plate is arranged on the frame. The robot tongs further comprise an air cylinder and vacuum suction cups. The clamping jaw assemblies are movably arranged on the frame. The frame is provided with a drive device used for driving the pair of clamping jaw assemblies to relatively move. The vacuum suction cups are arranged on a piston rod of the air cylinder, and the air cylinder is arranged on the frame. The robot tongs can adapt to grabbing of evaporators and coolers of various sizes and specifications to the maximum degree, efficient and automatic off-line stacking of two devices of an air conditioner is achieved, the production efficiency is improved, and the requirement for automation of a production line is met; and universality is high, frequent remodeling is not needed, the labor intensity of workers is relieved, and the cost is reduced.