Yak milk contains more calcium compared to regular milk, 1.13 times more than regular milk. The main role of calcium for human body is to regulate bone density and avoid bone fracture and osteoporosis. Regular consumption of yak milk can well replenish the calcium needed by the body and make bones healthier. The iron content in yak milk is 9.8 times higher than that of ordinary milk, and food supplement iron is healthier and safer. Therefore, yak milk is the most suitable food for human body to supplement iron. Zinc is also one of the essential trace elements, which plays an important role in human growth and development, immunity and immune function The zinc content of yak milk is three times higher than that of ordinary milk. "One cup of yak milk is equal to four cups of ordinary milk." Yak milk not only contains calcium, iron and zinc needed by the human body, but also contains fat, various proteins, vitamins, minerals and 18 kinds of amino acids needed by the human body, as well as more vitamin A and vitamin B.