Anechoic areas in the liver are usually considered to be caused by hepatic cysts, and the gradual growth of anechoic echoes indicates that the cysts are growing. Clinically, the lesion can be described as anechoic and hypo-, meso-, or hyper-echoic based on the ultrasound signal.Ultrasound anechoicity is fluid or a hollow organ such as the gallbladder or bladder. The liver is a parenchymal organ and anechoicity is often due to liver cysts. Liver cysts contain a lot of cystic fluid, so they appear hypoechoic. Liver cysts are small in size and have no clinical symptoms, and are often found incidentally when checking abdominal ultrasound, and generally do not require treatment, and abdominal ultrasound should be reviewed every 3 to 6 months. For large liver cysts, which cause compression of the surrounding tissues and organs, causing abdominal pain, abdominal distension, nausea and vomiting and other symptoms, surgical treatment is often required. Patients should go to the hospital in time if they have any discomfort in general so as not to delay the treatment.