The appearance of cysts on the liver is known as hepatic cysts, the occurrence of this disease is related to congenital factors, infectious factors, trauma, inflammation, tumors, etc. It is recommended that the relevant people to clarify the cause of the disease after timely consultation. 1. Congenital factors. Congenital hepatic cyst is a benign disease related to embryonic developmental disorders, i.e., the developmental disorders of intrahepatic bile ducts and lymphatic ducts lead to localized cystic enlargement and degeneration of intrahepatic bile ducts, resulting in cysts. 2. Infectious factors. It is common in parasitic infection, i.e. hepatic cysts, which is commonly found in pastoral areas, southwestern areas, and people who have long-term contact with cats and dogs. 3. Traumatic factors. Related to the liver trauma, when the liver trauma, the local will form hematoma, tissue liquefaction necrosis, thus appearing cystic cavity leading to liver cysts, also known as pseudocysts. 4. Inflammatory factors. Inflammation and stone obstruction of the bile ducts can lead to cystic dilatation of the bile ducts in the liver and bile stasis, also known as bile retention cysts. 5. Tumor factor. It may be due to the occurrence of cystadenoma, teratoma, cystic lymphangioma, etc. in the liver. When liver cysts are found, it is recommended to consult the doctor in time, improve the relevant examination, and standardize the treatment after clear diagnosis.