Abstract: According to a low cost required for the coalbed methane well development and a fracturing construction required to improve the actual effect and cost reduction.the paper had a studly on the technique princile.ools bunch structure in underground mine and key technolgy of the drillble bridge plug cable perforation co-perated technology.And the technology was applied to the site The resuts shcwed that the dillble bridge plug cable peroration co-operated fechnogy would havesimple ools bunch n the underground mine and would not be lnmited by the sectional rcturing layer number.The sand plug probabilly ocured was lovw and the sealing could be eaila released Aierthea ling and miling the brdge plug could ensure the wall bore unblocked and would be favorable to the late technical pjpestring .ptting down and other advantages. n the south-westregion, ite applicatio pracices of caled methane wvll howed that the drllble bridge plug cable perforation co-perated technology applied could not only ensure the perinence and accuracy of th sticing racturing but aso coult highy improve the time efecofthe frcturin The constoucion perid was only 10 % of the sand filing and parical ressurized and the drllble bridge plug cable peroration co-operated technology could improve the fracturing time effect and reduce the construction cost.