On the third day after appendicitis, if you have exhausted and defecated, you can eat semi-liquid food, such as chicken cake, bean curd brain, thin porridge and noodles, and you can also drink some soup-type food. It mainly depends on whether there is abdominal pain and bloating after eating, if there is, you need to suspend eating, maybe the intestinal function has not fully recovered. Its mainly based on the severity of the appendix, if the inflammation of the appendix is very heavy, the intestinal function may be slower to recover, so the diet should be slightly late. If the degree of appendix is very mild, then you can drink water and soup on the first day after surgery. The key is to see if there is exhaustion and defecation, it does not mean that defecation is not possible only first exhaustion, in fact, exhaustion and defecation is the same reason, it means that the intestinal function has recovered. You should pay attention to a small number of meals, not too full at once; and try to eat light food in the process of eating, do not eat too greasy, stuffed or sticky things, which are not easy to digest and will increase the burden on the intestines; try to eat a light diet and pay attention to small and frequent meals.