Winter is the golden season for nourishing kidney, which belongs to storing essence in water and echoes with winter. In winter, you should eat black fungus, black beans, black sesame seeds and other black kidney-tonifying foods. There are also yam, mutton and medlar, which can tonify the kidney. Don't miss the best opportunity to tonify the kidney. It is suggested that in winter, besides food supplement, we should pay more attention to soaking feet, controlling desire and preserving kidney essence. It is also necessary to "go to bed early and get up late and wait for the sun" to nourish kidney yin.