IBS should not eat cold, greasy and irritating foods, and seafood is not recommended to avoid aggravating the symptoms. 1. Cold food: mainly includes ice water, ice cubes, and food frozen in the refrigerator, etc. Intake of cold food will irritate the stomach and lead to aggravation of gastroenteritis symptoms. 2. Greasy food: mainly including all kinds of smoked and fried food, such as barbecue meat, grilled fish, fried sausage, etc. These foods contain a lot of fat, which is not easy to digest, will increase the burden on the stomach and intestines, affecting the recovery of the disease. 3. Stimulating foods: mainly including chili peppers, mustard, raw onions, etc. Stimulating foods will stimulate the gastrointestinal mucosa, resulting in aggravation of the condition. 4. All kinds of seafood: mainly including crabs, shrimp, sea fish, etc., gastroenteritis patients with decreased body resistance, eating seafood may appear allergic reactions, thus aggravating the discomfort; and seafood in the protein content is high, not easy to digest and absorb, will also increase the burden on the stomach and intestines, affecting the condition. Gastroenteritis should maintain a light diet, eat small meals, is conducive to the recovery of the condition; at the same time, we should pay attention to, serious symptoms should be timely medical treatment.