Usually refers to the particle size of black wolfberry between 0.5-0.6 cm, is a good quality of black wolfberry, its size is generally black wolfberry, high anthocyanin content, commonly known as the size of soybean. Chaidamu Lycium barbarum L. grows in the basin desert area with an altitude of 2800-3000 meters. It has high altitude, arid climate, clean ecological environment and no pollution. The results showed that Lycium barbarum contained 17 kinds of amino acids and 13 kinds of trace elements. The contents of calcium, magnesium, copper, zinc and iron were higher than those of Lycium barbarum. Beauty and skin, improve skin: prevent premature wrinkles, make skin younger and more vigorous. It not only prevents premature skin wrinkles, but also supplements nutrition and eliminates harmful free radicals in the body. Anthocyanins are natural sunlight cover to prevent ultraviolet radiation from the skin. If anthocyanins are used to protect the skin, about 85% of the skin cells can survive. The content of free amino acids, inorganic elements, vitamin C, B1, B2 and total sugar in the fruit of Lycium barbarum was 6.9 and 0.735 respectively. It contains 18 essential amino acids, including aspartic acid, glutamic acid, alanine and proline, most of which are free. Free amino acids account for about 50% of total amino acids. These amino acids are more abundant than the red wolfberry, and are much higher than the red wolfberry in content of VC and fat, which is conducive to direct absorption by the human body. At the same time, the fruit is also rich in trace elements, in addition to the major elements Na, K, Mg, Ca, iron, but also contains a certain amount of trace elements such as manganese, strontium, selenium, zinc, chromium, copper. Trace elements have direct or indirect effects on the activity of many enzymes, synthesis of nucleic acids and proteins, immunity to body and cell proliferation, and can be used for cancer prevention and treatment. The content of vitamin C in Lycium barbarum fruit is rich, which can supplement vitamin C deficiency in human body.