The highland barley mainly produced in Tibetan area is the main food for Tibetans. highland barley grows on the cold Qinghai-Tibet Plateau area with an elevation of 4200 meters to 4500 meters. It has a long history of more than four millions years. It's not only a kind of nourishing food but also a symbol of Tibetan cuisine culture. Tibetans use highland barley make noodles, pastry, Tsam-pa and liquor.