Abstract: In view of problem of high power consumption of traditional catalytic methane sensor, a pulsed power supply operation mode was proposed based on analysis of performance of MEMS low power consumption catalytic methane components. Specific duty ratio of pulse power supply was determined through output stability test and sensitivity test, and linearity, zero temperature characteristics, sensitivity characteristics, zero drift and sensitivity drift of the components under constant voltage supply and pulse power supply were tested. The results show that the pulse power supply operation mode can not only greatly reduce power consumption of MEMS catalytic methane sensor, but also has superior performance in zero drift and sensitivity.