Abstract: Aiming at the present situation that it is hard to have a yield of coalbed methane (CBM) with commercial values in more than 600 meters deep CBM wells by adopting quartz sand as proppant and active water as fracturing liquid, by means of FCES-100 fracture flow conductometer, this paper respectively tested the conductivities of quartz sand, ceramic and coated spina date seed under various closure pressures, meanwhile counted the crushed rates and observed the roundness and sphericity of proppants by using SEM. The experimental results show that all the conductivities of the three proppants are fairly good when the closure pressure is less than 15MPa. When the closure pressure is between 15 and 25 MPa, the conductivities of ceramic and coated spina date seed are relatively superior. When the closure pressure is higher than 25 MPa, only ceramic remains a relatively good conductivity. The optimization principle of the usage of proppants and fracturing liquid can be made according to the depths of coal seams for the fracturing design of CBM wells. Quartz sand should be considered when the depth is less than 600 meters. When the depth is between 600 and 1000 meters, either coated spina date seed or ceramic is usable. When the depth is more than 1000 meters, ceramic is mainly recommended.