The pain on the right side parallel to the navel may be caused by cholecystitis, pain in the liver area, pancreatitis, appendicitis, etc. The pain on the right side parallel to the navel may be caused by cholecystitis. 1. Cholecystitis: when gallstones, gallbladder duct inflammation and edema, roundworms and other factors guide the gallbladder duct is blocked, resulting in gallbladder stimulation, triggering chemical inflammation, the patient will appear parallel to the right side of the umbilicus pain, accompanied by nausea, vomiting and other symptoms. 2. Liver pain: If there are chest wall lesions, liver and biliary system diseases, pleura and lung tissue lesions, leading to the emergence of the right side of the navel pain, pain is divided into dull pain, stabbing pain, intermittent or persistent pain, the pain may be light or heavy or short-term self-relief. 3. Pancreatitis: The pancreatic fluid secreted by the pancreas contains a variety of digestive enzymes, if the pancreatic fluid is blocked, the digestive enzymes are activated in the pancreas, resulting in pain parallel to the right side of the navel, accompanied by dyspnea, oliguria, nausea, vomiting and other symptoms. 4. Appendicitis: the patient’s appendix tube is long and thin, the lumen contains microorganisms, if there is appendix lumen obstruction, bacterial infection, congenital malformation of the appendix and so on, which leads to the patient to have pain in the right side of the navel parallel to the navel, accompanied by nausea, vomiting, fever and other discomforts. The right side of the navel parallel pain may also be other reasons, it is recommended to go to the regular hospital in a timely manner, under the guidance of the doctor, the relevant examination, according to the results of the examination, targeted treatment.