Liquid crystal all-in-one computer dustproof device

The utility model relates to the technical field of a liquid crystal all-in-one machine, and in particular relates to a liquid crystal all-in-one computer dustproof device. The liquid crystal all-in-one computer dustproof device comprises a computer shell and a dustproof cover; an opening is arranged at a place where the rear part of the computer shell corresponds to a CPU (central processing unit); at least two notches are distributed on the dustproof cover; a dustproof filter screen is fixedly arranged at the rear part of the dustproof cover; and the shape of the dustproof cover corresponds to the shape of the opening, and the dustproof cover is detachably and fixedly arranged on the opening. The device provided by the utility model has a simple structure, and is convenient to use; the dustproof effect can be realized without opening a rear cover of a computer but only by clamping an anti-skidding fastener of the dustproof cover by two fingers to remove the dustproof cover, wiping off dust on the dustproof