The invention discloses a movable dustproof device for a driving face of a coal mine, and relates to the technical field of coal mine dust prevention. The movable dustproof device comprises a dust suction head, a filter box and a dust removal box, the dust suction head is arranged above one side of a mounting table, the dust removal box is fixedly connected to one side of the top surface of the mounting table, and the filter box is fixedly connected to one side of the top surface of the dust removal box; and the dust suction head is integrally arranged in a horn shape, a first connecting ringis arranged on the outer surface of one end of the dust suction head in the circumferential direction, meanwhile, a mounting sleeve is arranged on the outer surface of the other end of the dust suction head in the circumferential direction, first mounting holes are evenly formed in the first connecting ring in the circumferential direction, and semicircular fixing rings are vertically and symmetrically arranged on the outer sides of the mounting sleeve. According to the movable dustproof device, through the arrangement of an electric telescopic rod, a gear disc, a gear rack, a first air cylinder, a second air cylinder, the dust removal box, the filter box, a filter layer and a dust outlet pipe and mutual cooperation of the components, the movable dustproof device is convenient to use, rapid and efficient dust removal can be conducted, water resources in the movable dustproof device can be repeatedly utilized, and waste of the water resources is avoided.