It is generally believed that it is advisable to nourish the kidney in winter and the liver in spring. If your child needs to nourish the liver and kidney, you need to do it under the guidance of a professional doctor, do not take medication on your own. 1. Nourish the kidneys in winter. Kidney is water, the yin of yin, which corresponds to the winter qi. Kidneys are the base for sealing and hiding, and in winter, Yang Qi converges and hides in the kidneys, so that it does not move, and the human body’s qi and blood are also hidden with the winter energy. Therefore, it is advisable to tonify the kidneys in winter, so that the ‘complementary’ hidden in the kidneys, in line with the seasonal regimen. 2. In spring, it is advisable to tonify the liver. Liver is wood in five elements and is the yang in yin, which corresponds to the spring qi. The liver is the main rising, so the liver qi is strong in spring, spring tonic liver is conducive to the rise of liver qi, so it is appropriate to tonify the liver in spring. It should be noted that children’s bodies are delicate, for the body of young yin and young yang, it is appropriate to use the nature of the calm, easy to digest, and can strengthen the spleen and stomach (through the strengthening of the spleen to enhance appetite) of the food, and should be careful to eat nourishing and greasy tonic products. Children should take tonic medicines under the professional guidance of a doctor to prevent misuse or indiscriminate use, which may lead to adverse consequences. If there is any discomfort, please consult a doctor promptly.