The invention discloses a two-sided glass wiper. The two-sided glass wiper comprises a first wiper body and a second wiper body, wherein a second magnet is arranged on the second wiper body, a first magnet is arranged on the first wiper body, a water tank is arranged on the back side of the second wiper body and communicated with the side, attached to glass, of the second wiper body through a pipeline, the water tank is provided with an elastic side wall, a third magnet is arranged on the back side of the water tank, and the magnetism of the third magnet is opposite to that of the first magnet; a sliding block capable of being pressed in the vertical direction is arranged on the first wiper body and is supported by a restoration part, the first magnet is arranged in the sliding block, and a locking mechanism is arranged in the sliding block. After the sliding block is pressed, stress on the magnet on the back side of the water tank increases instantly, the side wall of the water tank is driven to contract, and then the internal pressure of the water tank increases under pressure so that cleaning liquid inside can be sprayed out onto the glass to be cleaned along the pipeline; in this way, a water tank which needs to be arranged in the room and a pipeline connected with the water tank in the prior art are omitted.