Lampshade fixing structure and ceiling lamp

The utility model provides a lampshade fixing structure and a ceiling lamp and relates to the technical field of lamps, the lampshade fixing structure comprises a main light lampshade plate, a mask pressing strip and a frame, the frame is arranged on the periphery of the main light lampshade plate in a surrounding mode, the edge of the lower side of the frame is provided with a pressing connection plate which is bent inwards, and the main light lampshade plate is connected to the pressing connection plate in a lap joint mode. The face cover pressing strip is installed on the pressing connection plate in the direction perpendicular to the main light lampshade plate, and the face cover pressing strip is connected to the surface of the side, away from the pressing connection plate, of the main light lampshade plate in a pressed mode. By the adoption of the vertical installation mode, the installation space is greatly expanded, the mask pressing strip can be conveniently, rapidly and conveniently installed on the