Lock yang is a kind of Chinese herbal medicine, its contraindication is with spleen deficiency and diarrhea (weak spleen function leads to diarrhea), yin deficiency and fire (deficiency of yin and essence in the body, the appearance of deficiency fire hyperactivity) or solid heat constipation should not be taken. Lockyang has the effect of tonifying kidney yang, benefiting essence and blood, moistening the intestines and laxatives. Lock yang is sweet, warm and yang-boosting, moist and nourishing, and can be used to treat kidney yang deficiency (lack of yang energy in the kidneys) and deficiency of essence and blood. It can be used to treat kidney impotence, lumbar and knee weakness, etc. It is often used in conjunction with hyssop, wolfberry, cornelian cherry, schizandra, ripened dihuang, etc. It can also be used in conjunction with dragon bone, cistanchiakis, and cuttlebone in treating kidney spermatorrhea and impotence. Lock Yang body moist intestinal slippery, can moisten dryness and laxative. It can be used for treating weak yang and essence deficiency, yin and blood exhaustion, and constipation, and can be combined with condensed honey, or with drugs such as Cistanches, flaxseed, cypress seed, etc., which can benefit the essence and blood, moisten the intestines and laxative. The Chinese herbal medicine needs to be identified by a Chinese medicine practitioner and then used in a targeted manner or combined with other medicines, and should not be taken without authorization, in order to avoid improper use of medicines and causing some unnecessary side effects.