The utility model belongs to the technical field of electric power pulley fixing devices, and discloses a suspension pulley fixing substrate. The main technical characteristic is that the suspension pulley fixing substrate comprises a hanging plate with a hook hole, wherein an angle iron fixing mount is arranged behind the hanging plate. When the fixing substrate works, the angle iron fixing mount is directly fixed on the edge of angle iron, hooks are suspended in the hook hole, and contact area between the angle iron fixing mount and the angle iron is large, so that the suspension pulley fixing substrate is firm in fixation and high in transmitting point, and can be used safely and conveniently.