Lock yang is generally not recommended to drink water every day. The use of traditional Chinese medicine pay attention to evidence-based treatment, if there is no indication not to take their own Chinese medicine, not to long-term application, and lock yang warm to help yang, long-term use may also appear dry mouth and tongue, sore throat, dry stools and so on. Lock yang is a kind of traditional Chinese medicine, warm and sweet in nature, belonging to the liver, kidney and large intestine meridian, with the effect of tonifying kidney yang, benefiting essence and blood, moistening the bowels and laxative. It can be used for kidney yang deficiency (lack of yang energy in the kidneys), deficiency of essence and blood, impotence and weakness of the waist and knees, impotence and slippery semen, and constipation with dry bowels. It should be noted that it is not suitable for people with yin deficiency (deficiency of yin and essence in the body, resulting in hyperactive fire) and solid heat constipation. Chinese medicine brewing water to drink tea with less active ingredients precipitation, the effect is not as good as decoction. If you need to take it, it is recommended to carry out scientific treatment under the guidance of a doctor.