There are many kinds of drugs for the treatment of IBS: first, acid-suppressing drugs, clinically commonly used are H2 receptor blockers, PPI inhibitors, the former are famotidine, ranitidine, the latter are omeprazole, pantoprazole. Second, drugs that regulate intestinal flora, such as Bifidobacterium typhimurium capsules 2 capsules once, 2-3 times a day. Third, drugs to protect the gastric mucosa, such as rehabilitation of new liquid 1 time 10ml, 1 day 3 times. Magnesium aluminum carbonate tablets 2 tablets once, 3 times a day, chewed after meals. Fourth, anti-inflammatory drugs, such as norfloxacin capsules, 1 time 2 capsules, 2 times a day. Montelukast 1 time 3g, 1 day 2-3 times orally. For the treatment of gastroenteritis generally need to clarify what causes, if it is an inflammatory infection need to anti-inflammatory, if it is caused by poor digestive function need to be given to regulate intestinal function.