The invention provides a belted layer transferring ring. The belted layer transferring ring comprises a fixed disc, a driving disc, clamping claw brackets, clamping claws and an air cylinder, wherein one end of the air cylinder is fixed on a base, and the other end of the air cylinder is fixed on the driving disc to be used for driving the driving disc to rotate back and forth; and the driving disc drives the clamping claw brackets and the clamping claws to retract along the radial direction by using a connection rod mechanism. According to the belted layer transferring ring with the structure, the clamping claws can move synchronously; and meanwhile, the coplanarity of the end faces of the clamping claws is guaranteed, the transferring precision of a belted layer and a crown is improved, and the tire forming quality is guaranteed. Furthermore, the quantity of magnetic switches on the air cylinder is increased, so that the accuracy and safety of the air cylinder are guaranteed; one air cylinder is used, so that the cost is saved; and meanwhile, the structures of the clamping claws are improved, and the replacement speeds of the clamping claws with different specifications are improved, so that the time is saved.