Recently a lot of mountain torrent monitoring stations and warning systems have been set up through the mountain torrent disasters control project in Jiangxi province, which provides significant impacts in defending mountain flood. However problems in operation, maintenance and management become more and more obvious since these equipment and platforms went into use. Based on the fact that the operation and maintenance of monitoring and early warning system of mountain torrent disaster is wide, complex, specialized, and that the operational funds are difficult to obtain, this paper probes into the possibility of government purchasing service mode, and proposes a monitoring technology based on web of things for effective monitoring and remote diagnosis and maintenance of the various facilities to reduce the work load of patrolling.