"First, eat more foods rich in vitamins. Children are prone to respiratory infections and other diseases in winter. Only by taking enough vitamins can we effectively enhance immunity. In winter, vegetables such as Chinese cabbage, radish, bean sprouts, spinach and lettuce are rich in vitamins. Parents can reasonably match and change their patterns to make their children nutritious in all aspects. Second, pay attention to supplement dietary fiber, which can regulate the absorption and excretion of food, keep the stool unobstructed, and is very beneficial to the discharge of toxins in the body. Third, don't ignore fungus food. Fungal foods such as mushrooms and Hericium erinaceus, as well as aquatic products such as kelp and laver, contain trace elements necessary for human body, which is helpful to enhance children's resistance and improve their physique. Fourth, eat more moist food. The dry climate in winter can make children eat more moist food. 5. Replenish water in time. Children are prone to symptoms of water shortage such as dry mouth, dry nose and dry throat. Parents should teach their children to drink water actively, don't wait until they are thirsty, and give them enough water to ensure their physical needs. "