Hometown of walnut in shangluo area of shannxi is famous, annual output is first in the country. At present, the cultivation area of 1.4 million acres of walnut in shangluo city, with an annual output of 20,000 tons, area calculation, production ranks the first, has become a famous production base of walnut. Walnut oil to taste the flavor concentrated in shangluo city, color white Huang Ruyu, high nutritional value, was welcomed by the European and American markets, Walnut exports accounted for one-third. Walnuts are rich in proteins, vitamins, minerals. Health effects on humans have a high.