The study site was located on the eastern fringe of the Tibetan Plateau where climate warming and enhanced UVB radiation (UVB) were severe.Seed germination,seedlings growth and photosynthetic pigments content of Picea asperata seedlings in the eastern fringe of the Tibetan Plateau were measured to investigate the responses of P.asperata seedlings to climate warming and enhanced UVB using Opentop Chambers (OTCs) and UVlamps.The results showed that:(1)Enhanced UVB radiation did not significantly affect seed germination.However,it significantly inhibited seedling growth,decreased chlorophyll contents,and caused a high seedling mortality of P.asperata （P<0.05）.(2)Warming markedly stimulated seed germination,facilitated seedling growth and increased chlorophyll content in needles of P.asperata (P<0.05).(3)Warming alleviated the harmful effects of enhanced UVB radiation on seedling growth and chlorophyll content,and decreased the high mortality induced by enhanced UVB.It could be reasoned that climate warming would alleviate the harmful effect of enhanced UVB on early regeneration of spruce forest.