The invention discloses an adjustable glass edging device which comprises a working table. An installing plate is arranged on one side of the working table, two baffles are arranged on the side, far away from the working table, of the installing plate, two thread pressing rods are connected to the two baffles through threaded holes, a pressing plate is arranged at the ends, close to the installing plate, of the thread pressing rods, a supporting base is arranged on one side of the working table, and an adjusting device is arranged inside the supporting base; and a cavity matched with the adjusting device is arranged in the supporting base, the adjusting device comprises a transmission gear, a transmission rack, a balance gear, a supporting rod and an adjusting rod, and the transmission gear is arranged inside the supporting base. The adjustable glass edging device is simple in stricture and convenient to operate, the polishing angle of a polishing block can be adjusted according to production requirements quickly and conveniently, and the applicability is high; and meanwhile, installation and fixing are reliable, direct polishing and edge alignment can be carried out after rotary operation, the number of installing times is reduced, the time is saved, and the polishing efficiency is improved.