Glass is often used in solution or moist environment, water erosion will affect the physical and chemical properties of glass, and even lead to glass failure. In recent years, great progress has been made in understanding the interaction process and molecular scale reaction mechanism of simple glass systems with water by using multiscale computer simulation. This paper focuses on three simple models glass systems: quartz glass, sodium silicate glass and sodium borosilicate glass. On the basis of elucidating the origin of its water resistance, the latest progress in the interaction process and mechanism between glass and water molecules were summarized. It has important reference value for further understanding water resistance of complex system glass and developing new functional glass.