The article outlines the different types of karst water systems in Yunnan Province, China. It categorizes them into three grades based on their hydrogeological features. The first grade is the karst water system, followed by shallow-circulating and deep-circulating systems in the second grade. The third grade includes five basic types: exposed, exposed-covered, exposed-buried, stratabound, and fault zone systems. The article also provides an investigation outline for each type of karst water system.