Liver cysts can be divided into: ① congenital liver cysts, ② traumatic liver cysts (pseudocysts), ③ inflammatory liver cysts (bile retention cysts), ④ neoplastic liver cysts (including teratoma, cystic lymphadenoma, cystadenoma, etc.), and ⑤ parasitic liver cysts (liver encapsulated worms). More than 90% of our cysts are congenital hepatic cysts (true cysts), which are benign diseases of embryonic developmental disorders, a “blister” in the liver, the wall of which is epithelial cells, and the inside of which is water, which is produced by the epithelial cells and makes the bladder swell. Depending on the severity, it can be classified as single, multiple, or multicystic liver, up to 20 cm or more, with fluid inside the cyst up to 4000 ml. Polycystic liver is often combined with polycystic kidney. Treatment: Very simple, minimally invasive laparoscopic “hepatic cyst opening and decompression” can be done.