Wan Quan, a Ming Dynasty doctor, told us in his secret of infant care that children often have a surplus of liver, a deficiency of spleen, a surplus of heart, a deficiency of lung, and a deficiency of kidney. The liver often has a surplus is that the liver is mainly solid evidence, less deficiency evidence, easy to trigger the liver wind, hand and foot convulsions, high fever convulsions and other conditions, treatment should be dredging the liver, diarrhea liver mainly, no need to supplement the liver. When caring for children, attention should be paid to eating less spicy and sour food, and not to dress too warmly, otherwise liver fire will be inflamed and liver yang will be hyperactive, resulting in dizziness and tinnitus, irritability and irritability, and aggravating convulsions.