The invention relates to a wide body pulley. The wide body pulley comprises two webs, a hub and two ring parts. The two webs are oppositely arranged at intervals, the hub penetrates through the two webs and is fixedly connected to the centers of the webs, the two ring parts are oppositely arranged on the two opposite faces of the two webs, multiple supporting parts are arranged between the two webs, and all the supporting parts are annularly distributed at equal intervals. The wide body pulley further comprises multiple reinforcing ribs, all the reinforcing ribs are distributed along the ringparts at equal intervals, and two edges of the reinforcing ribs are connected with the webs and the inner walls of the ring parts separately. According to the wide body pulley, firstly, as for the problems about conveying and steering of a rectangular-section drag chain, the limitation that a common pulley is only suitable for ropes is avoided, and the requirements of conveying and steering of thecable drag chain can be met; and secondly, the structure is simple, connection is achieved fully in a welding manner, and the wide body pulley is easy to machine and manufacture, low in cost and highin reliability.