The invention relates to a glass etching method. The glass etching method is characterized by comprising placing glass in a first cleaning pool and sequentially cleaning the glass in the first cleaning pool in a tap water phase, a pure water phase and an ultrapure water phase; placing the glass in an etching pool and etching the glass inside the etching pool by the aid of glass etching liquid; placing the glass in a second cleaning pool and sequentially cleaning the glass in the second cleaning pool in a tap water phase, a pure water phase and an ultrapure water phase; drying the glass by theaid of circulating hot air. A first ultrasonic generating device is arranged in the first cleaning pool. A second ultrasonic generating device is arranged in the second cleaning pool. The glass etching method has the advantages that the etching quality of glass substrates of liquid crystal displays can be further improved, and the glass etching method is good in etching quality.