According to the evolution of karst ecological environment system and the causes of rocky desertification disaster,this study established karst rocky desertification monitoring and pre-warning evaluation index system.According to the spatial information and attribute information,this system was designed based on the development trend of rocky desertification.GIS technique and mathematical models,combined with computer programming were employed to establish the karst rocky desertification monitoring and pre-warning evaluation index system.The established system can be used to monitor and predict environmental issues in time.It will provide supports to governmental decision making.