Guo Ning, a third grade elementary school student, suffered from “nephrotic syndrome” four years ago, recently came to the follow-up consultation, saw him glowing and glowing, other children’s parents said this does not look like a sick child; his mother told us that the previous two years is not like this, often cold, pale, recurrent kidney disease. Since he came to the pediatric department of Hubei Provincial Hospital of Traditional Chinese Medicine, he has been treated with a combination of Chinese and Western medicine, plus Chinese medicine for winter tonic, the child is getting stronger and stronger, and now he rarely catches a cold, and the medicine for kidney disease has been stopped for more than two years, and he has never relapsed. According to Chinese medicine, the root cause of kidney disease is physical deficiency, i.e. deficiency of the lungs, spleen and kidneys, especially in the kidneys. Although the disease starts with wind-heat, dampness, water-dampness, blood stasis and other real evil, but after treatment, the real evil is removed, the disease is relieved, the deficiency is significant, especially the spleen and kidney deficiency, so that the Qi and blood biochemical lack of sources, the body’s resistance is reduced, easy to feel the external evil and the onset of the disease, resulting in recurrence, delayed and difficult to cure. This is the root cause of the long course of pediatric kidney disease, difficult to treat. Therefore, children with kidney disease need to nourish the kidneys. The ancients believed that the best time to nourish the kidney is winter, because “the kidney is the master of winter” and “the winter solstice is the birth of yang”, and the ancients found through the understanding of the 24 solar terms that yang is weak at the winter solstice and strongest at the summer solstice. Therefore, in winter, the lung, spleen and kidney functions of children with kidney disease are weaker, and their ability to resist disease is more inadequate and susceptible to evil, which makes water and dampness more prevalent and blood stagnation more severe, thus leading to aggravation or relapse of the disease. “After the winter solstice, the yin qi starts to recede and the yang qi gradually returns, so at this time, the medicine taken internally and applied externally can take advantage of the rising yang qi and reach the internal organs, so that the effect of rapid warming and tonic can be achieved with half the effort. This will help to stabilize the child’s condition and make the disease heal.