The main organs under the right rib cage include part of the stomach esophagus, liver, gallbladder, pancreas, small intestine, etc., and part of the lungs under the rib cage. From the medical human anatomy, the organs under the right rib cage are mainly the liver and gallbladder, as follows: 1. The liver, a metabolic organ of the human body, is mostly located in the right upper abdomen, the right side of the rib cage and under the diaphragm is irregularly wedge-shaped, and only a small part reaches the left side, so if there is pain under the right side of the rib cage, the first consideration is a pathology of the liver, such as hepatitis, cirrhosis, etc. 2. The gallbladder, on the right side There is also a pear-shaped pouch shape behind the liver below the ribs. Gallbladder diseases such as cholecystitis and gallstones can cause pain around the right side of the ribs.3. The colon is mainly the ascending and transverse colon, others such as the duodenum, and everything is also partially adjacent to the right side of the ribs. So if the patient appears around the right side of the rib cage is not to clarify which exact part, can be determined by ultrasound can check. So any discomfort needs to be promptly checked systematically at the hospital.