Kidney deficiency in children is categorized into kidney yang deficiency, kidney yin deficiency, kidney qi deficiency and kidney essence deficiency. Kidney yang deficiency can be seen in coldness, kidney yin deficiency can be seen in hot hands and feet, kidney qi deficiency can be seen in coughing and wheezing, and kidney essence deficiency can be seen in developmental delays. 1. Kidney yang deficiency: children with kidney yang deficiency can be manifested as pale or grayish-black face, coldness of the whole body, lack of spirit, prolonged bowel movement or undigested food, or diarrhea at dawn. 2. Kidney yin deficiency: children can see tinnitus, feeling hot in the hands and feet, irritability, feeling of heat spreading from the face or chest to the whole body, flushed cheeks, and so on. 3. Kidney qi deficiency: children show mental fatigue, tinnitus, frequent and clear urination, incomplete urination, enuresis, frequent urination, etc.; or chronic coughing and wheezing, wheezing when moving, spontaneous sweating (involuntary sweating during the daytime, sweating is aggravated with a little movement), and low voice. 4. Kidney essence deficiency: delayed growth and development of children, mental retardation, short stature, slow closure of fontanel, bone impotence and so on. Kidney deficiency in children should be identified by the doctor, according to the specific conditions of the treatment, so as not to delay the condition.