The possible causes of abdominal pain are cold abdomen, gastrointestinal dysfunction, ulcerative colitis, acute gastroenteritis and so on. 1. Abdominal cold: abdominal cold patients due to cold stimulation, resulting in gastrointestinal spasms, may appear abdominal pain phenomenon, mostly accompanied by diarrhea and other symptoms. 2. Gastrointestinal dysfunction: patients with gastrointestinal dysfunction due to imbalance of normal flora in the intestinal tract may also experience abdominal pain with diarrhea. 3. Ulcerative colitis: ulcerative colitis lesions mainly involve the colorectal mucosa and submucosa, abdominal pain may occur, in addition to mucosal erosion, ulceration will lead to intestinal mucosa secretion of large amounts of fluid and absorption of water function decline, diarrhea symptoms. 4. Acute gastroenteritis: patients often eat unhygienically induced acute gastroenteritis, causing acute inflammation of the gastrointestinal mucosa, acute abdominal pain, diarrhea and other symptoms. If the symptoms can not be relieved in time, it is recommended that the patient seek medical attention in time to avoid serious consequences.