The compilation of serial maps of karst geology in China and Southeast Asia is a project under the “One Belt One Road” geological survey plan granted by China Geological Survey. This paper summarized the research trend of geoscientific mapping in China and Southeast Asia and introduced the significance,contents,technical routes,operating methods and progress of the project. Through bilateral and multilateral cooperation,this project builded an international cooperation platform for mapping and completes the preliminary compilation of related karst geological maps in China and Southeast Asia,thus filling up the blank of karst geological maps in this region.

As China and Southeast Asian countries have accelerated and globalized their economic development,karst environmental problems have become increasingly prominent and studying on and compiling maps of karst geology is quite important. Therefore,based on a wide collection of data in Southeast Asian countries,a cooperative map compilation has been carried out internationally. Through comprehensive research and analysis,a unified understanding has been achieved in terms of compiling principles,contents and representing methods,Distribution of Karst in Southern China and Southeast Asia (1/5000000) has been compiled,which provides foundations for environmental protection and scientific studies of karst geology.