Walnut oil has very high medical and nutritional function. The oil content of walnut kernel is above 60%. The unsaturated fatty acid of oil accounts for about 90%, including n-6 series unsaturated fatty acids, which are made of 20.3% Oleic Acid and 54.3% linolic acid and n-3 series polyunsaturated fatty acids, which contain 16.8% linolenic acid. Judging from the composition of the oils, n-3 combined with n-6 is comprehensive. Besides, Walnut oil also contains minerals: Calcium, phosphorus, iron, potassium, zinc, manganese, chromium and many kinds of vitamins such as carotene, etc. Walnut oil can prevent and treat cardio-cerebrovascular diseases and is effective for nutrition and health, anti-aging, cosmetology.