Abdominal pain and diarrhea are mostly considered to be caused by acute gastroenteritis, mostly due to unclean diet or intestinal flora disorders, and it is recommended to take oral acid-suppressing drugs combined with probiotics for diagnostic treatment. Acid-suppressing drugs commonly used are PPIs, including omeprazole, lansoprazole, rabeprazole, esomeprazole and so on, and probiotics commonly used are lactobacilli and so on. If the abdominal pain is not relieved or even aggravated after taking the above medicines, or the diarrhea symptoms are more serious, which may be accompanied by fever, panic, cold sweat and other symptoms, it is recommended to go to the hospital immediately to complete the relevant examinations, to clarify the specific cause of the pain in the lower abdomen, and anti-inflammatory, rehydration and other treatments can be given when necessary. Must not blindly use painkillers or antidiarrheal drugs to avoid masking the condition.