Abstract:Karst collapse is a widely distributed geological disaster in the world. According to incomplete statistics, 16 countries have experienced serious Karst ground collapse, which has seriously affected and restricted social and economic development of karst areas.Therefore, carrying out karst collapse monitoring work has an important role in predicting collapse. The monitoring technology of karst collapse is closely related to the mechanism of the formation of karst collapse. Therefore, based on the distribution law and formation conditions of karst collapse, the contents, techniques and methods of monitoring karst collapse at home and abroad, and advantages and disadvantages have been summarized systematically in this paper. It will provide technical references and methods for systematically carrying out karst collapse monitoring work. It is pointed out that the karst collapse monitoring work should be carried out by using the collapse formation mechanism, the characteristics of covering layers in the collapse area, hydrodynamic conditions, and comprehensive utilization of various monitoring means. A complete monitoring network should be formed.