Winter tonic should also pay attention to the science of tonic, to eat more warm stomach and spleen and stomach food, such as glutinous rice, jujube, radish, poria, etc., for the prevention of diarrhea in the next year's summer and fall to lay a good foundation. Meanwhile, winter is the best time to tonify the kidneys as it is the best time to get rid of the cold and warm the kidneys. Kidney is the basis of human growth and development, winter is the time of the kidney meridian exuberance, in this season if more salt will increase the burden of the kidney, therefore, the winter should be appropriate to reduce the intake of salt, eat more bitter food.