Abstract: This paper takes No.4 coal in a mine field in Binchang Mining Area as an example, the main factors affecting the development prospect of coalbed methane are determined through comprehensive analysis, and the evaluation system of the development prospect of coalbed methane is established. Based on that, entropy method is used to determine the weight of each influencing factor, the evaluation results are divided by the K-means clustering method, and MapGIS is used to delineate different types of development prospect, thereby overcoming some limitations of the current evaluation methods of coalbed methane development prospect, and improving the accuracy of prediction of favorable areas for development. The research believes that the main factors affecting the development prospect of the No.4 coalbed methane are resource conditions(gas content, ash content, net thickness of coal seam), occurrence conditions (tectonic location, roof thickness), and development conditions (permeability, burial depth); development prospect are divided into 5 categories: extremely favorable area, favorable area, relatively favorable area, medium area and unfavorable area. The favorable areas are mainly distributed in the northeast of the mine field.