The invention discloses an alpine desertificated land restoring method with the barley. The alpine desertificated land restoring method with the barley comprises the following steps that when the soil is thawed, the barley is planted in a desertificated land with smaller slope, after planting, irrigation and fertilization are not needed during the whole growth period of the barley, enclosure is conducted on desertificated land area with barley sowing, livestock eating and trample are strictly prohibited, defoliation is not conducted in 3 years, the barley seeds are not harvested, and barley seeds are sowed additionally and appropriately. The alpine desertificated land restoring method with the barley has the advantages that the operation is simple, the feasibility is high, the popularization is easy and the like; to plant barley in the desertificated land, prominent ecological benefits and economic benefits can be achieved with lower cost, the desertification treating effect is prominent, and the sustainability is long, so that the barley can serve as optimized plant to restore alpine desertificated land in northwestern of Sichuan province.