Abstract: Betula alnoides is a valuable fast growing timber species with good perspectives in tropical and warm subtropical areas.A three years trial was conducted on its seed storage under dry condition,in package sealed or not and under a serial temperature treatment respectively.It is concluded that (1) different package has no remarkable effect on its seed storage;(2) seeds lose their vigor after three month under controlled treatment (no treatment) in Guangzhou, P.R. China while when stored under dry condition,their germination rate do not decline obviously in ten months;(3) seeds nearly lose their germination capacity in 10 months when stored under the temperature of 15 °C,and (4) seeds have been kept well under the temperature of 10 °C,5 °C,0 °C and-5 °C for three years,thus 10 °C seems to be the critical temperature for low temperature method to store the seeds.The results will provide a reference for seed storage of Betula alnoides,and probability to save genetic resource of the species vs.seed in the long term,and will prompt the extension and genetic resource conservation of this species.