Tailings dam is a kind of high potential energy hazard in nonferrous mine, which may cause serious loss of treasure even life of downstream area once disaster occurs. However, due to the harsh environment, especially rainstorm, lightening stroke, gale, etc., the reliability and safety of on-line monitoring system is always under threatened. In order to solve the problems of the tailings dam safety monitoring system in harsh environment, aiming at the bottleneck of these systems, we focus on the encapsulation and protection of data acquisition station, intelligent distributed power supplier, mesh access point, multi-source information fusion, portable dispatching pad, which enhanced the industry applicability of tailings dam safety monitoring system.