Coalbed methane(CBM) reservious is greatly affected by geological characteristics of coal seams. Based on analysis of a large number of experimental test's data, are study the geological properities of coal reservoir which include 3D of coal seams, coal petrology, coal chemistry, coal' s process feature, coal rank and coal fades, et al .The results showed that the key coal seams are stable spatial distribution, the coma- lative thickness is huge, coal quality is good and has a high degree of thermal evolution. It has a very good basic conditions for coalbed methane reservoir.