Abstract: According to the differeces between characteristics of conventional natural gas reservoir and characteristics of coal-bed gas seams, formed four kind of effective technologies of prompting exploitation: open-hole cavity completion, gas injection, hydraulic fracture, prompting exploitation of physical field. The open-hole cavity completion is suitable for the middle metamorphic coal of endogenesis fracture growth, the hydraulic fracture applies the better hard fracture of coal-bed gas seams. the exploitation of gas injection is effective, but the shortage of the fountain of gas in many coal seams makes the appliance seldom, the accelerating desorption and flow of coal to gas in the extra alternating electric field or sound field needs a lot of experimentations and investigations in lab.