Abstract: Based on the geological units divided by pervious researchers for coalbed methane development and combined with logging and production data obtained from coalbed methane wells, the paper studies the geological characteristics of high-yield coalbed methane wells in Fukang syncline. The results show that in the fourteen geological units divided in Fukang syncline, the fissure water between coal beds in the stagnant area mainly come from pore phreatic water in loose rock mass and the lateral supply of the aquifer in the same zone, coalbed methane may easily accumulate under the action of hydraulic sealing and plugging and the production in the stagnant area is higher than that in the runoff area; due to the influence of burial depth on reservoir vertical stress, the stagnant area with medium burial depth has relatively good permeability, whose production is higher than that of the deep-burial stagnant area; the dual lateral resistivity logs are used to judge the development degree of cracks in the coal beds, the reservoir with slight deformation in deep strata has good permeability, whose production is higher than that with serious deformation. It is considered that the combined development of coal-series conventional natural gas is helpful for the high yield of coalbed methane wells