Taking apple dwarfing rootstock M26 as experimental material，by conventional survey and trench method，the growth of apple on height of apple dwarfing rootstock M26 out of ground was studied.The results showed that the shoots shriving of apple tree was happened very seriously on dwarfing rootstocks M26 in Aksu.The shoots shriving was occurred on more than 73.30% on the apple tree.The growth of apple tree was very slow，less spurs on the tree，no strong stem.No obvious regularity was showed on the effect of height dwarfing rootstock out of ground.New roots were not grown on dwarfing rootstock M26 in soil.Comprehensive evaluation of apple dwarfing rootstock M26 in Aksu，and believed that the dwarfing rootstock M 26was poor adaptability，should not be grown in Aksu.