Abstract: In order to solve problems of disorderly wiring and inconvenient install and maintenance of sensors caused by single-parameter measurement of exsiting sensors used in safety monitoring and control system of coal(mine,) a design scheme of(mine-used multi-parameter) sensor was(proposed.) The(multi-)parameter sensor is designed by use of MSP430F149 single-chip microcomputer.It can transmit collected signals of gas concentration,CO concentration,O_2 concentration and temperature to LED for displaying after data processing and output alarming signal.Some testing results showed that the multi-parameter sensor has high precision,good stability,and strong anti-interference ability.