Abstract: According to characteristics of automation products of coal mine, the paper analyzed existing problems of automation products of coal mine in China and indicated that building integrated automation system with unified network platform is a developing trend of automation and informatization of coal mine in China. It introduced current basis of integrated automation system of coal mine in China and main involving aspects in its building, gave structure and characteristics of network platform based on industry Ethernet and field buses and problems that should be noticed in implementing integrated automation system of coal mine.