The liver has the main roles of bile production, conversion, and production of clotting factors. 1. Bile production: The liver synthesizes bile every day, which is transported through the bile ducts to the gallbladder for storage. When the body eats, the gallbladder will automatically contract and expel bile into the duodenum. Bile helps the body absorb lipids and fat-soluble vitamins. 2. Transformation: the liver is the body’s largest digestive gland, plays the role of nutritional transformation. Various proteins ingested by the body are broken down into amino acids under the action of proteases, and then synthesized in the liver into proteins needed by the body. 3. Coagulation and immunity: Coagulation factors and immune proteins, which play an important role in the body’s coagulation and immune systems, are synthesized in the liver. Liver is an important organ of the human body, if there is weakness, abdominal distension, abdominal pain and other discomforts, it is recommended to consult a doctor in time, follow the doctor’s instructions for further examination, with the help of the doctor to clarify the cause, and targeted treatment or therapy.