Automobile top cover assembly and automobile

The utility modelrelates to an automobile top cover assembly and an automobile, the automobile top cover assembly comprises a fixing support and a plurality of stiffening beams, the fixing support comprises a support body and a plurality of connecting joints arranged on the periphery of the support body, the connecting joints are arranged around the support body at intervals, the number of the stiffening beams is equal to that of the connecting joints, one end of each stiffening beam is connected to the connecting joints, and the other end of each stiffening beam is connected to the connecting joints. One ends of the reinforcing beams are connected to the connecting joints on the fixing support, the other ends of the reinforcing beams extend in the direction deviating from the fixing support, reinforcing plates are arranged at the other ends of the reinforcing beams, and connecting holes are formed in the reinforcing plates, one ends of the reinforcing beams are connected to the connecting joints on the fixin