Abstract: In view of requirements of hot standby system of small and medium coal mine, the paper proposed an implement scheme of software solution of hot standby system based on export/import function of database. It introduced synchronization strategy, network transmission, implementation process in details, and elaborated functions and processes such as task switching and transparent access.The scheme has characteristics of high efficiency, good fault tolerance, easy deployment and stable operation, and can meet common technical requirements of coal industry to hot standby system.