The utility model belongs to the technical field of electric power facility and specifically relates to a prefabricated cable well frame of diagonal formula equipment is related to. A prefabricated cable well frame of diagonal formula equipment, including 2 main frames and 2 subsidiary frames, main frame includes main frame body, the both ends of main frame body are equipped with main slope section, be equipped with the atress body between two main slope sections, the atress body forms stair structure with main frame body, assist the frame including assisting the frame body, the both sides ofassisting the frame body are equipped with assists the slope section, two main frames and two subsidiary frame concatenation back form a rectangle structures, atress body side both ends are provided with main embedded plate, the side both ends of assisting the frame body are provided with subsidiary embedded plate, through angle steel welded connection between main embedded plate and the adjacentsubsidiary embedded plate. The utility model discloses simple structure, firm in connection, the transportation, remove convenient, when main frame with assist after the frame concatenation forms cable well frame, connect very firmly, stable good to certain drainage water -proof effects has.