Objectives: Shouyang block and Shizhuang block are the main coalbed methane (CBM) exploration and development blocks in China. There is an obvious integral difference of drainage dynamic of CBM wells between two blocks. Moreover, that difference is also observed in a single block. This paper is focused on analysis of controlling geological factors drainage dynamic of CBM wells. Methods:Based on geological data from two blocks, this paper carries out a comparison analysis on the sedimentary facies, coal seam permeability, characteristics of faults, in situ stress types and tectonic stress amplitude, as well as lithological assemblages for understanding the controlling factors causing the integral difference of drainage dynamic of CBM wells between two blocks and that in a single block. Results:The study shows that the distinction of sedimentary facies, coal seam permeability, insitu stress types and tectonic stress amplitude are main factors causing the difference of drainage dynamic of CBM wells between two blocks, while the faults, in situ stress types and lithological association types at specific well locations interpret the difference of drainage dynamic of CBM wells within a block. Conclusions:Selections of favorable area and well site/coal target for CBM development should be based not only on the resources evaluation, but also and especially essential, on sedimentary facies, coal seam permeability, structure and lithological association types.