Proper exercise can promote gastrointestinal peristalsis, help digestion, and all can help increase appetite. First of all, try to diversify the dishes. Try to make different changes in dishes, cultivate children to get used to the taste and taste of different dishes, and teach relevant knowledge by the way. This will not make children hungry, but also help to cultivate their appetite. On the other hand, if it is inconvenient to prepare all kinds of dishes, or children don't even eat anything, then you can consider letting them starve moderately. Hunger makes them uncomfortable, and teach them the disadvantages of not eating or being picky about food in time. You can also measure their height and weight after eating, so that they can have a sense of accomplishment and further enjoy eating. Strictly control snacks and only eat dinner. Developing the habit of regular exercise will help to increase appetite.