Bloating and diarrhea can be seen in gastroenteritis, functional dyspepsia, irritable bowel syndrome, etc., need to choose the appropriate drugs according to the cause. Commonly used medications for gastroenteritis include antidiarrheal drugs such as decongestants, gastric mucosal protective drugs such as magnesium aluminum carbonate, and gastric stimulants such as domperidone. Antibiotics such as norfloxacin need to be applied if infection is present. Commonly used drugs for functional dyspepsia are acid inhibitors such as omeprazole, gastrointestinal stimulants such as mosapride, and digestive enzyme preparations such as compound digestive enzymes. Commonly used drugs for irritable bowel syndrome include gastrointestinal dynamics regulators such as trimethoprim, intestinal microecological agents such as Bifidobacterium bifidum, and antidepressants such as amitriptyline. It is recommended that when the manifestation of stomach bloating and diarrhea occurs, go to the hospital in time to consult the doctor and use medication under the guidance of the doctor, do not self-medication.