Cysts are benign lesions that are mostly asymptomatic and are usually found during physical examinations. There are more sites where cysts can occur, including liver cysts, kidney cysts, pancreatic cysts, spleen cysts, and ovarian cysts. They can be single or multiple. Small cysts do not have any symptoms; when the cysts are large, they can show symptoms of compression, manifesting as an occupying effect, mainly compressing the adjacent tissues and organs and showing corresponding symptoms, such as epigastric discomfort, malignancy, vomiting or jaundice when the liver cysts are large, and fever and other symptoms can occur secondary to infection, and kidney cysts can show discomfort in the kidney area. Cystic lesions are not terrible and there is no need to seek medical help blindly. The diagnosis of cysts is relatively easy and can be made clearly by ultrasound or CT. When diagnosing liver cysts, it is important to differentiate them from liver encapsulated cysts and also from liver abscesses. Both diseases have their own characteristics, such as fever in liver abscess, increased total blood leukocyte count or neutrophil run in routine blood tests, and increased blood sedimentation. The intracutaneous test for liver encapsulated cysts is 90-95% positive, and puncture must not be done when liver encapsulated cysts are suspected to prevent cyst fluid peritoneal implantation and anaphylaxis. In principle, cysts <4 cm without any symptoms do not require any treatment. Regular ultrasound examinations can be performed to observe the changes in the size of the cyst. If the cyst is larger, more than 4 cm or with uncomfortable symptoms, treatment can be considered. At present, interventional treatment is the most effective. Under the guidance of B-ultrasound or CT, we perform puncture, firstly, the cystic fluid inside the cyst is pumped out, then a certain amount of anhydrous alcohol is injected into the cystic cavity, and then the anhydrous alcohol is pumped out after a while. The purpose of anhydrous alcohol injection is to destroy the cyst wall cells, otherwise the cyst will grow up again after a while even if the cyst fluid inside the cyst has been pumped out. After repeatedly injecting anhydrous alcohol several times and then pumping it out again, the purpose of healing can be achieved. However, for patients who are allergic to alcohol other sclerosing agents can be used, such as sodium cod liver oil acid and pinyamycin. In addition, the amount of alcohol injected should be appropriate, and the combination of contrast and ultrasound can be used to show the size of the cystic cavity and aspiration under fluoroscopy if necessary. After the operation, patients usually have no adverse reactions, but they must be observed for 12 hours, lie still, and rest in bed for 24 hours to avoid strenuous activities and prevent bleeding from the puncture site. After the puncture of renal cysts, pay attention to the observation of urine, and review urine routine if necessary, and appropriate symptomatic treatment can be given if there is hematuria. Interventional treatment of cysts does not require incision, local anesthesia, very fine puncture needle, safe, less painful, good efficacy and very few complications. Interventional treatment of liver cysts, kidney cysts, pancreatic cysts, and ovarian cysts is highly effective. For cysts with infection, the cyst fluid must be repeatedly flushed with saline containing antibacterial agents after aspiration, and drainage must be placed if necessary, and must be combined with anti-infective and supportive treatment . In conclusion: ultrasound intervention is an advanced medical treatment for all kinds of cysts and leiomyosarcomas. It is performed under ultrasound guidance by directly puncturing into the diseased tissue and injecting drugs to cause rapid dehydration, degeneration necrosis and atrophy of the diseased tissue. Its features include: 1. Accurate display of lesions. Real-time ultrasound monitoring can accurately display the precise site of the lesion, find the best needle entry point, determine the site, angle, direction and depth of needle entry, and at the same time display different anatomical levels of the human body to ensure that important organs, blood vessels and bile ducts are not punctured, thus minimizing the risk of puncture. 2.Easy and rapid operation. 3.The treatment effect is obvious. Under the guidance of ultrasound, the cyst is precisely located, and the imported puncture needle is used to enter from the abdomen, puncture the cyst, extract the cystic fluid and inject special drugs to make the cyst shrink and disappear, so that the simple non-separated cyst can be cured more than once, and the occurrence of abdominal adhesions is effectively avoided, and there is no need to worry about rupture due to stripping during surgery to avoid recurrence. 4.Little tissue damage and less pain for patients. 18G imported fine needle puncture, the eye is less than 1mm, no trauma, no pain, does not affect normal work and life, and the recovery period is extremely short. 5, low cost. CT, nuclear magnetic, isotope guided intervention, the cost is more expensive, the need to repeat the examination of patients cost more; ultrasound interventional therapy is relatively low compared to the cost of surgery, long-term drug therapy, patients can spend less medical costs can get the best results of one-time treatment without recurrence. 6.No radiation damage. Whether guided by X, CT or MRI, patients are more or less exposed to radioactive contamination or nuclear contamination, while ultrasound interventional therapy for cystic fibroids, under ultrasound guidance, avoids radioactive damage. However, interventional treatment cannot achieve radical cure for polycystic kidney and polycystic liver, and can only relieve the symptoms to a certain extent.