The utility model discloses a carry transmission, including the guide rail, the guide rail top is equipped with a set of connection piece, be equipped with the base plate between the connection piece, be equipped with drive arrangement on the base plate, follow the driving wheel, the last action wheel that is equipped with of drive arrangement, the action wheel passes through the belt and connects from the driving wheel, be equipped with the transport chain in the guide rail, carry chain and belt surface contact. The utility model discloses a belt and transport chain complex kind of drive, the belt is big with the area of contact who carries the chain, and any position of following between action wheel to the follower all is effectual drive scope, can drive the transport chain of long spindle number well to can adjust the belt and carry the drive power size between the chain according to the size of load. Adopt belt gearing's mode, possess still that the noise is low, the advantage of transmission safety.