Abstract: For existing mine gas outburst parameter measurement accuracy is not high, pressure low resolution, complex operation resulting in decreased accuracy of measurement results and other issues, a portable mine gas outburst prediction instrument is designed to resolve an index to measure the gas analytical indicators K1 as the main function. STM32F103ZET6 is the control center of instrument, high-precision digital gauge measuring sensor MEAS1220A outburst pressure , 24 precision A/D converter ADS1218 is used to converte the sensor output voltage into digital signal and digital filtering, A least squares fitting method is used for static calibration sensor. Measurement accuracy is greatly improved. Actual measurements under the mine show that the instrument has the features of measurement accuracy and high resolution, stable performance, easy operation, low power consumption, fast response and accurate forecasting results.