Yin deficiency and blood heat are mostly caused by external heat illness, excessive intercourse, fire from the five wills or overdose of dry evil, resulting in Yin not controlling Yang, internal deficiency heat and forced blood flow. Clinical manifestations include dizziness and tinnitus, insomnia and dreaminess, slow reaction, memory loss, temper tantrums, lumbar and knee weakness, premature ejaculation and spermatorrhea, high sexual desire, body wasting, hot flashes and night sweats, irritable heat in the five hearts, dry throat and mouth, red tongue with little fluid, acne and pimples, low menstrual flow or amenorrhea and avalanche in women, etc. There may also be heat disturbing the mind, heat delirium, red and vivid tongue or burrs, fine pulse, blood stagnation and heat stagnation, forgetfulness like madness, and forgetfulness like madness. The patient may also experience heat disturbing the mind, heat delirium, red and vivid tongue or prickly tongue, fine pulse, blood stasis and heat, forgetfulness like madness, inability to swallow mouthwash, black colored stools that are easily solved, etc. Severe patients may also have various symptoms of bleeding, such as vomiting blood, hemoptysis, epistaxis, blood in urine, blood in stool, subcutaneous bleeding, etc. When the body has Yin deficiency, Yin nourishing drugs can be taken for regulation. For example, the Chinese medicine Liu Wei Di Huang Wan, which has the function of nourishing Yin and tonifying the kidney. It is suitable for kidney yin deficiency, dizziness and tinnitus, soreness and weakness of the waist and knees, bone vapor and hot flashes, night sweating and seminal emission. If the clinical manifestation is blood heat, you should choose drugs to clear heat and fire, such as Rhizoma Dihuang Tang, which has the function of clearing heat and detoxifying and cooling the blood to invigorate the blood.