Landslide disasters occur more frequently, have a wider range of influence and a larger social impact under the conditions of today’s extreme weather. Monitoring and early-warning is one of the effective measures to mitigate the risk of geological disasters. Rainfall is an important factor affecting the stability of the slope, and many achievements have been made in the research of safe early-warning system for rainfall-induced landslide. This paper classifies and summarizes the safe early-warning models of landslide suitable for different types of rock and soil, which has certain guiding role for future research work. We found that by summarizing and analyzing the research results: the safe early-warning model of landslide gradually turns to the study on slopes of special types of rock and soil; the early-warning of slope at county and township level with large plotting scale is more suitable for China"s national conditions; at present, there are still some deficiencies in the study of simulated physical test and numerical simulation test of rainfall-induced landslide, and there are still errors in the practical early-warning work of safe early-warning model for rainfall-induced landslide. In order to improve the effect of monitoring and safe early-warning for slope landslide, the research and development of monitoring and early- warning system for landslide based on satellite remote control and telemetry technology should be vigorously carried out in the future, and the study on interaction of each factors affecting slope stability should be strengthened.