Abstract: Aiming at the problems of complex method,big errors and difficult analysis of measuring methods for air resistance in safety technology management of mine ventilation,the paper put forward a design scheme of multi-functional detector for mine ventilation parameters.The detector adopts STM32F103VB chip as main controller,uses battery-powered mode and has LCD screen,high-capacity memory,keyboard and communication interface.It can collect parameters of pressure,temperature,humidity,air speed and gas concentration of mine roadway and record information of roadway number and support form.The trial running result showed that the detector has stable performance,reliable action and accurate measurment.