The invention belongs to the field of mobile phone screen glass cleaning equipment, and discloses a cleaning machine. The cleaning machine comprises a machine frame and a plurality of conveying rubber rollers arranged on the machine frame to form a conveying channel. The machine frame is provided with a drive motor used for driving the conveying rubber rollers to rotate. One end of the conveying channel is the feeding end, the other end of the conveying channel is the discharging end, a cleaning area is formed between the feeding end and the discharging end, and the cleaning area is internally provided with a cleaning mechanism and a drying device. The cleaning mechanism comprises a spraying device and a brush assembly. The brush assembly comprises an upper brush shaft and a lower brush shaft which are arranged in parallel, the peripheral wall of the upper brush shaft and the peripheral wall of the lower brush shaft are covered with bristles, the two ends of the upper brush shaft and the two ends of the lower brush shaft are provided with brush adjusting mechanisms used for adjusting the length of a gap between the upper brush shaft and the lower brush shaft, and the drying device is connected with an air filter. The cleaning machine is high in cleaning efficiency and good in cleanliness, the brush adjusting mechanisms are arranged for adjustment to be carried out conveniently, positioning is accurate, glass screens with different thicknesses can be cleaned, and the drying device is high in air drying efficiency, and noise is low.