Pain above the navel and diarrhea are considered to be related to acute gastroenteritis, gastric ulcer and other factors. Daily attention should be paid to diet to reduce the stimulation of food to the gastrointestinal tract, and active medical care is needed to improve the symptoms of abdominal pain and diarrhea when the condition is serious. Common causes and treatments are as follows: 1. Acute gastroenteritis: Acute gastroenteritis may result when patients eat unclean and irritating food, with symptoms such as pain above the navel and diarrhea, and some patients may also have symptoms such as bloating, nausea and vomiting. It is recommended to go to the hospital in a timely manner and follow medical advice to use multi-enzyme tablets, montelukast, levofloxacin hydrochloride tablets, sodium bicarbonate tablets, etc. to relieve symptoms; 2. Gastric ulcer: patients with gastric ulcer may also have pain above the navel, diarrhea and other symptoms, and the symptoms may be accompanied by bleeding, perforation and other symptoms in severe cases. Patients should promptly go to the hospital and improve relevant examinations, such as barium meal examination of the upper gastrointestinal tract, endoscopy, etc. After clarifying the condition, you can follow medical advice to use omeprazole, pantoprazole, aluminum thioglycollate, tioprednisone, etc. for drug treatment. Note that patients need to pay attention to their daily diet. They can eat foods containing low dietary fiber and easy to digest, such as fish and noodles, etc. Avoid unprocessed foods, meat juices and soups that easily stimulate gastric acid secretion, hard-to-digest glutinous rice and nuts, strong condiments, as well as strong tea, coffee and wine. Maintain small and frequent meals, with regular rations at each meal. In terms of cooking methods, they should be chopped, made soft or pureed.