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Landslide monitoring and early warning system is the most effective method to reduce the fatalities and economic losses from landslide hazards.The traditional methods,such as extensometers and deep-seated inclinometers,are expensive and difficult to be installed in steep high mountains.ln this study,a MEMS(Micro Electro Mechanical Systems)based multi-source wireless monitoring system was used to buildmonitoring and early warning system for rainfall-induced landslides,as one of more feasible and cost-effective countermeasures for high mountains.The well-developed equipment of themulti-source wireless monitoring system was installed in a landslide-prone slope to monitoring the triggering of landslide and debris flow in Wenchuan earthquake region,China.The variations of several state variables of the soil moisture content,soil matric suction,rainfall as well as ground shaking were observed,and these measurement was used as inputs in a multiple thresholds criteria to evaluate the slope stability conditions.The in situ measurements from the proposed system was benchmarked with the slope stability analysis,and therainfall-induced landslide early warning was proposed after calibrating the parameters.The proposed early warning system and thresholds were expecting for providing accuracy prediction of rainfall-induced shallow landslides in earthquake hit region.