Abstract: In order to effectively improve the efficiency of gas extraction, adaptive gas extraction pipeline valve automatic control system applied to the coal mine was designed. The degree of valve was adjusted by the adaptive adjustment algorithm, aiming at the maximization of the gas extraction concentration and extraction flow. Industrial test showed that, Concentration of the gas extraction maximum increased from 20% to 45.84% when The opening of the valve changed from 100% to 50% ;The gas pure flow extraction maximum increased from 0.328m3/min to 0.464m3/min when The opening of the valve changed from 100% to 80%. As the change of valve opening, the gas extraction concentration and extraction of pure traffic both showed a trend of increases at first then decreases.