The invention discloses an integrated monitoring and early warning system for a geological mountain torrent disaster and a realization method thereof. The system comprises an early warning platform and at least one wireless sensor network. The wireless sensor network consists of an intelligent gateway and a plurality of monitoring piles; and the monitoring piles include a flood monitoring pile that is used for monitoring a water flood level alarming grade and an inclination angle of the pile body and a vibration monitoring pile that is used for monitoring an acceleration and an inclination angle due to an impact on the pile body. And the monitoring piles also have field warning functions. The data of the monitoring piles are sent to the early warning platform by the intelligent gateway; and the early warning platform displays the monitoring data information on a GIS information map in real time and displays the information in real time for early warning for the public in a web mode. According to the invention, after the functions are localized at the system network, the economics of scale due to data collection are obtained rapidly. Therefore, a novel technical scheme is provided for monitoring and early warning of the geological disasters.