Every afternoon stomach pain may be colitis, pancreatitis, duodenal ulcer and other diseases caused by different causes, different treatment methods, it is recommended that the patient to go to the hospital for examination, a clear diagnosis of the symptomatic treatment. 1. Colitis: Patients suffering from colitis will cause intestinal peristalsis to induce intestinal spasm, resulting in stomach pain every afternoon, in addition to diarrhea, fecal incontinence, loss of appetite and so on. Patients can choose Liuzosulfapyridine enteric-coated tablets, mesalazine enteric-coated tablets and other drugs for treatment under the guidance of doctors. At the same time take antibiotic drugs, such as metronidazole, vancomycin and so on 2. Chronic pancreatitis: After suffering from pancreatitis, the pancreatic duct is blocked, resulting in the inability to eliminate the intestinal lumen and the increase of pancreatic fluid, which induces the swelling of pancreatic peritoneum. It causes the patient’s stomach pain. Patients can be treated with drugs such as omeprazole and octreotide as prescribed by the doctor. Surgery may be needed if the symptoms are severe. 3. Duodenal ulcer: due to the weakening of the duodenal mucosal defense function, it will lead to the duodenal mucosa corroded by gastric acid, forming a local inflammatory reaction, so there will be pain, and in addition, the patient may also manifest acid reflux and heartburn and other symptoms. Omeprazole, ranitidine and other drugs can be taken under the guidance of the doctor. Every afternoon stomach pain may also have many causes, such as gastric ulcer, gastrointestinal tumors, chronic appendicitis, irritable bowel syndrome, and gynecological, such as ovarian cysts, etc., it is recommended that the patient actively go to the hospital, a clear diagnosis, in the doctor’s instructions to use the medication, do not take the medication on their own, so as to avoid delays in the condition.