The causes of frequent pain in the stomach and diarrhea (abdominal pain and diarrhea) include abdominal cold, acute gastroenteritis, intestinal polyps and so on. 1. Abdominal cold: due to cold weather, eating cold food, abdominal warming measures are not in place, resulting in abdominal cold, triggering spasmodic contraction of the intestinal smooth muscle, resulting in abnormal intestinal function, which leads to diarrhea, abdominal pain symptoms. 2. Acute gastroenteritis: Due to eating unclean food, the gastrointestinal tract is infected by bacteria and viruses. When these disease-causing microorganisms enter the gastrointestinal tract, they will release the toxins in the body, triggering intestinal spasm and contraction, and intestinal dysfunction, thus causing patients to experience abdominal pain, diarrhea and other symptoms. 3. Intestinal polyps: If the patient has polyps and other occupying lesions in the intestine, when the patient eats, the food will stimulate these occupying lesions, triggering bleeding and spasms at the site of the lesion, which will lead to diarrhea, abdominal pain and other symptoms. If the patient has frequent stomach pain and loose stools (abdominal pain and diarrhea), it is recommended that the patient go to the hospital in time. Improve the relevant examination, clarify the cause of the disease, and follow the doctor’s instructions for treatment, so as not to delay the condition.