The invention discloses a cabinet provided with a convenient-to-detach dust screen, and relates to the field of computer devices. The cabinet provided with the convenient-to-detach dust screen comprises a cabinet body, two detachable side plates and a dust screen, wherein the side plates have flat U-shaped structures; the transverse edges of the upper parts and the lower parts of the side plates are provided with symmetrical sliding chutes; each vertical edge is provided with three exhaust ports; the dust screen is wrapped in a strip-shaped metal border; the size of the metal border adapts to those of the sliding chutes in the side plates, and the metal border is arranged in the sliding chutes, one end of the metal border is provided with a fixing table protruding to the outside of the cabinet; one end of each side plate is provided with a limiting sheet; the limiting sheets are connected to the vertical edges on side edges through springs. By adopting the cabinet, dust can be cleaned conveniently.