There are many organs on the right side of the belly button. Pain on the right side of the abdomen may be caused by inflammatory diseases of the abdominal cavity, such as acute appendicitis, chronic appendicitis, acute cholecystitis, acute pancreatitis, acute gastritis or hepatitis, and so on. If there is significant metastatic pain on the right side of the abdomen with obvious gastrointestinal reactions such as nausea, vomiting and fever, acute appendicitis is more likely. If the pain is particularly pronounced, with no obvious changes on physical examination, and positive percussion pain in the right kidney area, urinary stones are more likely. If the abdominal pain is accompanied by diarrhea, acute gastroenteritis is usually more likely. If abdominal pain is accompanied by anal cessation and defecation, intestinal obstruction is more likely. It is recommended to go to a specialized hospital to improve the relevant examination and give appropriate treatment after clear diagnosis.