The liver is located in the upper abdomen of the body, mainly the right upper abdomen. It is a “neighbor” to the right lung, heart, stomach, duodenum and colon, and is located close to the diaphragm, flush with the fifth intercostal space (right midclavicular line), a small portion of it is located in the left epigastrium, most of it belongs to the epigastric and right quadrangular region, and it is then close to the right kidney. The position of the liver is not static and it usually moves when our position and breathing change. In normal adults, the edge of the liver cannot be felt at the edge of the ribs. When the liver is diseased, an abnormally sized and textured edge of the liver can be felt on palpation. The liver is the largest digestive organ in the human body, with the functions of bile secretion, metabolism, detoxification and hematopoiesis, and it is an indispensable and important organ for the organism to maintain normal life activities.