Abstract: The purpose of landslide monitoring is to provide reliable data and a scientific basis for gaining knowledge of and mastering the evolutionary process of landslides,catching the characteristic information of collapses and landslides in time and making a correct analysis,evaluation,prediction and control of landslides.The indicators of landslide monitoring include the macro geological feature indicator,ground displacement indicator,indicator of displacement in borehole,indicators of ground water(pore pressure,ground water table,ground water chemistry),inducing factor indicators(weather,human activity),geophysical indicator and geochemical indicator.The techniques of landslide monitoring include the extensometer of ground fissures,inclinometer in borehole,global position system,and remote sensing and integrated real-time monitoring and warming system.A case study of the Baota landslide monitoring system in the Three Gorges reservoir area of the Yangtze River is introduced in this paper.