The invention discloses a coil pressing device, and belongs to the technical field of transformer production, which includes a support portion, a drive portion and a pressing portion; The support portion includes a base, a cross beam, a chute and a lug; a lateral beam extends circumferentially outwardly of that base, the cross beam is provided with a sliding groove penetrating the cross beam, a pair of lugs are arranged below the cross beam, and the transmission part comprises a screw, a sliding block, a lower hook, a steel cable, a bevel gear and a pulley; the screw is installed on the lugs of the support part, a sliding block is installed on the screw, the sliding block and the screw are threadably matched, the sliding block is connected with the lower hook, and the lower hook is exposedabove the cross beam through the sliding groove of the support part. The steel cable is connected to the lower hook and the upper hook of the pressing part, the screw extends to the center below thebase, the inner side end of the screw has a bevel gear, the pressing part includes a top cover and an upper hook, the top cover is installed above the coil, and the top cover peripheral ring has an upper hook.