Kidney deficiency refers to the imbalance of yin and yang in the kidney area of the human body, resulting in the obstruction of the meridians of the kidneys, which prevents the smooth flow of qi and blood to all parts of the body, resulting in a series of symptoms in the body. The symptoms of kidney deficiency in the brain include memory loss, lack of concentration, easy to lose concentration, low work efficiency, etc.; in the emotion, it is manifested as irritability, depression, anxiety, dizziness, and easy to be irritable; in the will, it causes problems such as lack of confidence, lack of passion and enthusiasm in work and life, and lack of interest in things around the body; in the sexual function, it is manifested as indifference to sexual desire, premature ejaculation, impotence, spermatorrhea, and reduced sperm Women usually suffer from irregular menstruation, abnormal leucorrhea, infertility, etc.; it also leads to vision loss, gray hair, hair loss, weakness of the waist and knees, loose teeth, etc. Kidney deficiency is usually divided into kidney yin deficiency and kidney yang deficiency, the symptoms caused by yin deficiency and yang deficiency are different, in life, pay more attention to observe the changes in their own body, you can find their own disease characteristics from some small details, so as to determine their own symptoms.