A shrunken gallbladder can lead to a decrease in the volume of the gallbladder and a decrease in the amount of bile stored. The shrunken gallbladder may also cause a decrease in the mucous membrane area of the gallbladder, which may result in a decrease in the function of concentrating bile, and therefore may cause a decrease in digestive function, which may manifest clinically as a loss of appetite, nausea, vomiting, abdominal distension, or even fatty diarrhea after eating fatty foods. In addition, gallbladder shrinkage may also be caused by gallbladder lesions, such as gallbladder atrophy caused by cholecystitis, when patients are prone to recurring symptoms of cholecystitis, abdominal pain, fever, and even jaundice, which seriously affects the quality of life of patients, and even long-term recurring attacks may lead to gallbladder cancer, affecting the survival of patients. Of course, there are some normal people, the volume of the gallbladder itself is small, but does not affect the normal physiological function, so it is not harmful to the body, and does not require any clinical treatment.