Whether or not acute gastroenteritis can be fed needs to be determined by the situation. For patients who can eat as early as possible, they must eat as early as possible to restore intestinal function. The intestinal mucosa is very fragile, and the nutrition of the intestinal mucosa comes from the food and intestinal flora, so if the patient does not eat for too long, the recovery of the intestinal mucosa will be slowed down, and the intestinal mucosa will atrophy. Therefore, for patients with acute gastroenteritis, it is advisable to resume diet as soon as possible. For patients who vomit more obviously and cannot eat at all, it is possible to correct the function of the gastrointestinal tract and give mucosal protection drugs and acid suppressants at this time, but it is still advisable to start resuming diet as soon as possible, so that the intestinal mucosa does not atrophy and the intestinal flora can be maintained in a beneficial state when the diet is adequate.