An embodiment of the invention relates to a glasses system. The glasses system comprises a left lens device, a right lens device, a connecting rod and a battery, wherein the left lens device comprises a left shell, a left film, a left annular support frame, a left piston gas-liquid bag, a left cover plate, a left bottom plate, a left distance measuring lens, a left chip and a left motor; the left motor controls first stepping of a left piston push rod, so that first fluid with a first injection amount of a left piston flows to a first left inner cavity; the first quantitative deformation of the left film is increased under the pressure of the first fluid; the first curvature of the left film is increased, and therefore, the left film is adjusted to achieve a first reduction control focal length; the right lens device comprises a right shell, a right film, a right annular support frame, a right piston gas-liquid bag, a right cover plate, a right bottom plate, a right distance measuring lens, a right chip and a right motor; the left lens device is connected with the right lens device by the connecting rod; and the battery provides power for the left distance measuring lens, the left chip, the left motor, the right distance measuring lens, the right chip and the right motor.