Abstract: In this paper, the radon response ability and power failure recovery experiments of SD-3A radon meter and BG2015-R radon meter, which are equipped in the Tenth Five-Year Plan of Seismic Radon Observation Network, are carried out. The experimental results show that the response time to reach the target concentration of 60% and 90% is less than 10 minutes and 60 minutes when the detected radon meter inputs low and high radon concentration gas samples; when the detected radon meter is in high concentration, the response time to input air samples is less than 20 minutes and 120 minutes when the detected radon meter is in high concentration; the power failure may not affect the daily monitoring of the radon meter; the experimental results have no effect on the establishment site; The performance test index of radon gauge for seismic observation has good reference value.