Abstract: In order to investigate the control effect of microwave on Lasioderma serricorne,the effects of different microwave power and radiation duration on the control effect and the effects of microwave power and strips throughput in redrying line on the control effect and tobacco leaf quality were experimented.The results showed that:1) in the testing device,all the pests in strips were killed in the condition of microwave power of 5 kW and radiation duration of 45 s;2) in the redrying line,the pests of all growth phases in strips were killed in the condition of microwave power of 30 kW and strips throughput of 800 kg/h;3) microwave had no negative effect on strips quality.