The afforestation techniques which initially showed suitable for the arid-hot valleys in Yuanmou county,Yunnan province were studied. The results suggest that three steps of measures should be taken to improve the survival rate of the tree-grass employed in the arid-hot valleys.First,to prepar land by digging level ditch (60cm in depth and width).Secondly, to raise saplings with polybag during the period of March 10 to April 10(90～100 days before transplanting).Third, to transplant saplings during the period of June 20 to July 10 when the precipitation reaches 20～30mm.