Kidney yin deficiency and kidney yang deficiency are terms used in the academic field of Chinese medicine to differentiate between the kidneys. Kidney yin deficiency and kidney yang deficiency are two of the manifestations of kidney deficiency, in addition to the yin and yang deficiency of the kidneys. Kidney yin deficiency refers to the deficiency of kidney yin to control yang and internal disturbance of deficiency fire. The main manifestations are: 1. weakness of the waist and knees, dizziness and tinnitus, poor sleep, more dreams, memory loss, hypersexuality, spermatorrhea in men and menstruation in women or amenorrhea. 2. The body shape is thin, throat pain, dry throat, lack of fluid in the mouth, facial fever in the afternoon, night sweating, red tongue with little coating and thin pulse. Kidney Yang deficiency mainly refers to the loss of kidney Yang, functional decline, and inability to help Yin. The main manifestations are: 1. soreness and weakness of the lower back with miraculous pain, men’s inactivity, spermatorrhea, spermatorrhea, women’s infertility, indifference to sexual desire; 2. thin stools, incomplete digestion of food or morning diarrhea; or puffiness, sunken and sunken, or even abdominal distension and pain, easy to panic, cough and asthma; 3. fear of cold, cold hands and feet, especially the lower extremities, dizziness, poor mental health, clear and long urine or more urine at night, tongue texture Pale tongue, fat tongue with teeth marks, white smooth coating, sluggish or weak pulse. The main distinction between kidney yang deficiency and kidney yin deficiency is whether it is yin or yang, that is, kidney yang deficiency has cold manifestations and kidney yin deficiency has deficiency heat manifestations.