The gallbladder mainly includes physiological functions such as storing bile, concentrating bile and secreting mucus. 1. Storage of bile: When the body is in a state of hunger, the bile secreted from the liver is stored in the gallbladder through the right and left hepatic ducts. After eating, bile is released from the gallbladder as the main component of digestive juices to help the body digest and absorb ingested food. The liver secretes 800~1000ml of bile per day, which is concentrated and stored in the gallbladder. 2. Concentration of bile: The capacity of the gallbladder is limited, usually only 60~80ml, but the liver can secrete about 800~1000ml of bile every day, which is obviously not able to be stored in the gallbladder. The gallbladder has a very powerful function of concentrating bile, which concentrates the bile secreted by the liver by 5~10 times and stores it in the gallbladder. 3. Secretion of mucus: Concentrated bile can irritate the bile ducts and cause damage to the biliary mucosa. The gallbladder can secrete an average of 20 ml of thick mucus per day, which protects the biliary mucosa from being eroded by concentrated bile. The gallbladder plays an important role in the human body and has many other functions. In your daily life, you need to pay attention to your own dietary habits to improve the protection of your gallbladder.