Cysts are common clinical diseases, including liver cysts, kidney cysts, ovarian cysts, thyroid cysts, N-fossa cysts, sciatic nodule cysts, etc. The incidence of liver cysts and kidney cysts increases gradually with age, and the detection rate is as high as 50% in people over 50 years old. Smaller cysts are asymptomatic and do not require treatment; larger cysts can produce compression symptoms and affect the function of related organs, such as: abdominal distension, lower abdominal cramps, loss of appetite, jaundice, hydronephrosis, etc., and even reduced liver and kidney function, so larger cysts need active treatment. There are two ways to treat cysts: a. Cyst unroofing surgery. The key is to remove most of the cyst wall or all the free cyst wall after aspirating the cystic fluid, just like removing the roof, so it is called “unroofing” surgery. Laparoscopic cyst unroofing surgery has the advantages of precise efficacy and less trauma. Second, ultrasound-mediated puncture sclerotomy. That is, after the cyst fluid is extracted by ultrasound-guided puncture, chemical drugs (such as anhydrous alcohol, hypertonic sugar, polyglactin, etc.) are injected into the cyst cavity to destroy the cellular tissue of the cyst wall and further secrete cyst fluid, so as to achieve the purpose of curing the cyst. It has been proved that ultrasound-mediated cyst puncture sclerotherapy has the advantages of no incision, high cure rate, few complications, fast postoperative recovery, low cost, etc. Some patients can even be treated without hospitalization, and can be treated as they go. At present, ultrasound-mediated percutaneous puncture sclerotherapy has become the treatment of choice for liver cysts, kidney cysts, pelvic cysts, N-fossa cysts, etc.