With complicated geology formation in Taiwan, the hazards such as debris flows and landslide are triggered regularly after the heavy rainfall or the river channel erosion. In order to establish a systematic research approach and realistic design procedure, great efforts have been made in the past few years among the government and private supported projects. This article reviews these efforts from the point of views of engineering life-cycle and the procedure of developing, hazard potential evaluation, field monitoring and testing, and establishing design specification. Furthermore, this article also emphasizes the history of developing the slope management system and the hazard mitigation system, for the purpose to deliver for thoughts to the future developing.