The rapid growth of liver cysts can be considered as a combination of bleeding, infection and malignant transformation of cysts, etc. It is recommended to go to the hospital in time for further examination to clarify the cause of the disease. 1. Clinically, liver cysts caused by congenital or traumatic injury usually grow very slowly. If the growth of cysts accelerates significantly, it is considered to be due to the invasion of blood vessels during the growth of cysts, which causes intracystic hemorrhage and thus leads to the rapid growth of cysts. 2. Most hepatic cysts are independent cystic structures, but some cysts are connected to the bile ducts. If the bile ducts are obstructed due to stones, bile may flow into the cysts, and infections may lead to the rapid growth of the cysts. 3. In addition, it cannot be ruled out that the cystic adenoma is cancerous, which leads to the cyst growing faster in a short period of time. Therefore, it is recommended to go to the hospital for further imaging examination to clarify the diagnosis.