Nutrition experts suggest that cold weather will affect the human urinary system, increase urination, and excrete more inorganic salts such as sodium, potassium and calcium with urine. At this time, people should eat more foods containing inorganic salts such as potassium, sodium and calcium. The public should also eat more vegetables, appropriately increase food such as animal viscera, lean meat, fish and eggs, and eat more food such as chicken, soft-shelled turtle, soft-shelled turtle, mutton, longan, litchi, walnut meat and fungus if possible. These foods can not only supplement calories, but also replenish qi, nourish blood and tonify deficiency.