Abstract: In view of problems of management and analysis of data with multi-source, multi-scale and multi-type existed in implementation of CO2-ECBM coal bed methane development technology, a construction method of geological spatial database for CO2-ECBM based on GIS was proposed. Firstly, data is obtained through geological survey of area and mine and drilling industrial testing analysis according to demand of CO2-ECBM technology. Then, the data is refined, shared in spatial reference, classified and coded. Finally, the data is stored according to Geodatabase data model, so as to realize sharing, management and visualization and application analysis of the data, and provide decision support for implementation of CO2-ECBM technology.