The utility model discloses a combined type fan cover and fan, belongs to fan manufacture technical field, including a plurality of casing, a plurality of casing around the axle center combination form the cover body, said casing includes cover wall, mounting support and longeron, said mounting support is provided the one end of said cover wall, said mounting support is perpendicular to said cover wall, said longeron is perpendicular to said cover wall, said longeron is perpendicular to said cover wall, said longeron is perpendicular to said cover wall, said longeron is perpendicular to said cover wall, said longeron is perpendicular to said cover wall, said longeron is perpendicular to said cover wall. The longitudinal beam is arranged on the outer side wall of the cover wall, one end of the longitudinal beam is connected with the mounting bracket, the mounting difficulty is reduced by separately mounting the shell, the mounting bracket is directly connected with a wall body or a box body, a fixing plate part is omitted, and the purpose of saving the cost is achieved.