Abstract: Aiming at the shortcomings of backward judging technology, low judging precision, high labor intensity and difficult to realize on-line and continuous judgment in the process of gas drainage reaching the standard in coal mining enterprises, combining with the process flow of gas drainage reaching the standard, the mathematical model of gas drainage reaching the standard is reconstructed by means of computer programming and data analysis technology, and a set of on-line evaluation system of gas drainage reaching the standard is designed and implemented. The application results of 3207 working face in a mine show that the system realizes the real-time and online output of gas drainage law, intelligent design of gas drainage borehole and evaluation results of gas drainage reaching the standard. The evaluation results show that the residual gas content in this area is 5.43 m³/t,and the residual gas pressure is 0.47 MPa, and the gas extraction rate of the working face is 65.78% in accordance with the actual results of the mine, which provides a real-time continuous prediction technology for the evaluation of gas extraction standards.