With the development of the industrial technology the hydraulic power station are widely used in different industries. The hydraulic power unites usually work in remote areas, and the ambient is very poor, so that the maintenance and management issues become increasingly prominent. To solve this problem, the sensors and Indramotion MLC65 can be used to collect and process the information, the wireless Technology-GPRS-DTU to transfer remote data, SQL 2005 database and Web technology based on B/S structure to design the remote monitoring system of the hydraulic power station . It realized not only real-time status monitoring, data storage and query function, but also a visual data manipulation, timely alarm and warning functions. It is a good solution to the maintenance，regulation and other problems of the hydraulic power station.