Rosa roxburghii fruit has high nutritional value and medical value. Its taste is sour, astringent and flat; Xiaoshi Jianpi, convergence and diarrhea; It can be used for treating indigestion, abdominal distension, dysentery, enteritis, vitamin C deficiency, etc. Rosa roxburghii juice can also block the synthesis of N- nitroso compounds in human body and prevent cancer. Has special curative effect on treating human lead poisoning. Vitamin C, an effective component in Rosa roxburghii extract, has the functions of anti-aging and prolonging female puberty. Rosa roxburghii is rich in sugar, vitamins, carotene, organic acids, more than 2 kinds of amino acids, more than 1 kinds of trace elements beneficial to human body and superoxide dismutase. . In particular, the content of vitamin C is extremely high, which is the highest among fruits at present, 5 times that of citrus and 1 times that of kiwifruit, and it has the reputation of "king of vitamin C". .