Kidney yin deficiency is a Chinese medicine term referring to the name of a condition in Chinese medicine, the deficiency of kidney yin, poor nourishment, which leads to the symptoms of internal heat in the body yin deficiency. There are many causes of kidney yin deficiency, as follows: First, chronic disease depletion. There are many chronic diseases that require long-term reliance on drugs to control the development of the disease, the burden of drugs on the kidneys is very large. Because when taking drugs, the body will need the kidneys to detoxify and detoxify, so the long-term use of drugs to treat disease can lead to serious kidney yin deficiency. Most patients with severe kidney yin deficiency have the experience of taking medication for a long time. Second, bad habits. There are many bad habits in life that can cause excessive kidney load, such as drinking, smoking, staying up late, etc. These bad habits will make the human organ wear and tear, triggering kidney yin deficiency. Thirdly, the indiscriminate use of tonic drugs. There are many varieties of tonic drugs, and the efficacy and properties of each tonic are different. The medicinal properties of tonic drugs are cold, hot, warm and cool, and too many warm and dry drugs can cause dampness and heat in the kidneys, leading to kidney yin deficiency. So if you take the tonic randomly, you may not achieve the efficacy of the tonic, but also lead to kidney yin deficiency. Finally, kidney yin deficiency can lead to weakness in the hands and feet, dizziness and tinnitus, sore limbs, and in serious cases, memory loss, male impotence, spermatorrhea and other phenomena, so daily attention must be paid to nourishing the kidneys.