Children’s yin deficiency fire (Yin essence deficiency in the body, the emergence of excessive fire) symptoms generally have five heart heat (two hearts and two feet heart heat, and consciously heart and chest heat), dry mouth and tongue, constipation, night sweating (after going to sleep sweating abnormally, waking up sweating to stop), and so on. 1. five heart heat: if the children’s yin deficiency fire, the body heat will burn the fluid, there will be two hearts and two hearts of the feet heat, heart and chest heat (irritability and sultriness), the performance of emotional irritability. 2. Dry mouth and tongue: children’s body Yin deficiency fire, Yin fluid can not moisten the mouth and tongue, there will be dry mouth and tongue phenomenon, will want to eat cold food, want to drink cold drinks. 3. constipation: due to yin deficiency and fire, the body’s fluid deficiency can not well moisturize the intestines, there will be short yellow urine, constipation. 4. Night sweating: the balance of yin and yang in the human body, in order to sleep well at night, if the body of yin deficiency and fire, the night will be too much yang, heart fire, affecting sleep, fall asleep after the yang will sweat to the surface of the body, then the symptoms of night sweating. If children have symptoms related to yin deficiency and fire exuberance, parents need to bring to the hospital in time under the guidance of a professional doctor for treatment, so as not to aggravate the symptoms.