Abstract: Acacia glauca(L.) Moelichl,Leucaena leucocephala cv.Salvador,Acacia mearnsii De Wild.are main introduced trees afforesting in upside of hot and arid valley of Jinsha river.In germination experiment,90 ℃ hot water seed soaking at the beginning and cleaning out the seeds with clean water after cooling,the soaking time is 24 h.With this simple way,seeds of the three trees germinated well and germination rates were 66.5%,83.0%,87.0% in lab and 52.78%,65.74%,58.64% in nursery.As 100 days sapling in vessel which nursed before the middle ten days of March,more than 85% sapling height exceeded 40,20 and 25 cm and collar diameter exceeded 0.25,0.40 and 0.30 cm.Ratios of height and diameter were about 10.0,ratios of root to shoot were more than 2.0 except L.leucocephala cv.with 1.88.Strong and high lignification sapling grew well in the hot and arid valley of Jinsha river.