People often talk about bad kidneys, which is equivalent to what Chinese medicine calls kidney deficiency. Kidneys are the foundation of the innate nature, and they store essence, dominate water and contain qi. Therefore, the kidney is closely related to human growth and development and reproductive function. Kidney deficiency generally refers to the weakness and insufficiency of the kidney’s qi, yin and yang, i.e., it can be categorized into kidney yin deficiency, kidney yang deficiency, kidney qi deficiency and yin and yang deficiency. Specific symptoms are as follows: 1, kidney yin deficiency: (1) palms and feet more in the afternoon – night self-conscious heat. (2) Night sweating (sweating during sleep) and self-sweating. (3) Easy dizziness, tinnitus. Kidney Yang Deficiency: (1) Fear of cold, cold hands, feet and lower back, like the whole person soaked in cold water. (2) Sore back, weak legs, fatigue. (3) Frequent diarrhea at night, loose stools, not shaped. Kidney qi deficiency: (1) Frequent low back pain, walking will be self-conscious of the waist has a heavy feeling, like tying a sandbag on the waist. (2) Frequent urination at night, urine dribbling, children will also appear in the phenomenon of bedwetting. (3) Spermatorrhea, spermatorrhea, premature ejaculation in men, late menstruation or dysmenorrhea in women. (4) Yin and Yang Deficiency: Symptoms of both Kidney Yang Deficiency and Kidney Yin Deficiency. Kidney is the innate essence of human, its importance is self-evident, bad kidney will affect the normal growth and development and reproductive function, we should ask traditional Chinese medicine diagnosis, diagnosis and treatment, to restore the normal physiological function of the kidney.