There are many causes of diarrhea and stomach pain, which may be acute enteritis, catching cold, gastric ulcer, etc., and need to be treated according to the cause. 1. Acute enteritis: Bacterial and viral infections, unclean food can cause intestinal flora disorders, and then abdominal pain and diarrhea symptoms. Under the guidance of the doctor, the application of norfloxacin, enteritis and other drugs to relieve symptoms. 2. Cold: when the abdomen is cold, the intestinal tract is stimulated, peristalsis increases and may even be accompanied by spasms, resulting in food is not digested and absorbed, diarrhea and stomach pain, you need to do a good job of warming measures, appropriate hot compresses, and more hot water to relieve. 3. Gastric ulcer: gastric ulcer patients due to gastric mucosa damage, poor digestive function, can cause diarrhea accompanied by abdominal pain, can also appear nausea, vomiting, black stool and other symptoms. You can apply omeprazole, bismuth pectin, cimetidine and other drugs under the guidance of the doctor for treatment. In addition, cholecystitis, pancreatitis and other diseases may also lead to diarrhea and abdominal pain, it is recommended to go to the hospital in time for examination, to clarify the cause of the disease, early treatment, to avoid affecting health.