The pain on the right side of the stomach may be caused by acute appendicitis, hepatobiliary system diseases or intestinal obstruction, etc., which need to be treated by dietary adjustments, medication or surgery. 1. Hepatobiliary system diseases: the right side of the stomach pain is most commonly caused by diseases of the hepatobiliary system, such as gallbladder stones, cholecystitis, etc. Usually, it is necessary to do further ultrasound examination to make a clear diagnosis, and use antibiotics such as amoxicillin to treat it, and if necessary, to perform surgical treatment. 2. Acute appendicitis: the right side of the stomach pain may be patients with acute appendicitis, the typical symptom is metastatic right lower abdominal pain. If the condition is mild, the patient can be treated conservatively by temporary fasting and using antibiotics such as amoxicillin, while the more serious condition needs to be treated by surgery to remove the appendix. 3. Intestinal obstruction: right abdominal pain caused by intestinal obstruction requires the use of amoxicillin and other broad-spectrum antibiotics for anti-infective treatment, as well as the use of antispasmodic scopolamine, rehydration and other treatments. If necessary, surgical treatment, such as intestinal anastomosis. There are many other reasons for the right side of the stomach pain, it is recommended that once the patient found his right side of the stomach pain, timely medical improvement of relevant examinations, standardized treatment.