Back muscle exercise equipment

The utility model discloses back muscle exercising equipment, and relates to the technical field of back muscle exercising equipment, the back muscle exercising equipment comprises a connecting seat, one side of the connecting seat is fixedly connected with a hollow disc, when the back muscle exercising equipment is used, because a sliding seat is fixedly connected with the connecting seat through a bolt, the sliding seat can be fixed at any horizontal position of the connecting seat, and the connecting seat can be fixed at any horizontal position; after the proper distance between the sliding seat and the hollow disc is adjusted, a user sits on the sliding seat fixed by a bolt, two feet are put on the pedal, then two hands pull the pull rod, and the pull rod is pulled to drive the connecting belt to be pulled out, so that the wind-up roller rotates; the other end of the spring is fixedly connected with the inner wall of the hollow disc, the spring is elastically deformed at the moment, tension enabling the c