Chronic renal failure (CRF), also known as chronic renal insufficiency, refers to chronic progressive renal parenchymal damage caused by various reasons, resulting in significant atrophy of the kidneys, unable to maintain their basic functions, and clinical syndromes characterized by metabolite retention, imbalance of water, electrolyte, acid-base balance, and systemic systemic involvement, which is also known as uremia. The interval from the onset of the primary disease to the beginning of renal insufficiency can be several years to more than ten years. Chronic renal failure is the severe stage of renal insufficiency. Liver and kidney cysts are common clinical diseases, mostly related to congenital developmental abnormality or acquired degenerative changes, and are common in single occurrence, accounting for more than 90% of the cases, with different sizes, mostly single room, or multiple rooms, or separated, and the diameter of large hepatic cysts can be up to tens of centimeters. Larger cysts can be symptomatic, and cysts located on the surface of the liver and kidneys can rupture and cause hemorrhage under external collision or blow. The diagnosis of liver and kidney cysts mainly relies on imaging tests, such as ultrasound, CT, magnetic resonance, etc., of which ultrasound is the preferred test. Small cysts less than 3cm in diameter generally do not require treatment, and traditional surgical methods include cystectomy or internal drainage. Ultrasound-guided puncture and aspiration of alcohol injection for the treatment of hepatic (or renal) cysts is currently the safest, simple and effective treatment method. The technology began in the late 80s of this century, the basic principle is to use anhydrous alcohol on the cyst epithelial cells of dehydration and protein coagulation, under ultrasound guidance, accurate positioning, through the skin will be special puncture needle percutaneous puncture inside the cyst, pumping cystic fluid, injection of anhydrous alcohol, so that the cyst epithelial cells of the cysts degeneration and necrosis, the loss of cystic fluid secretion, so as to achieve the purpose of the root cause of the cure. A certain amount of alcohol (usually 25% of the total amount of cystic fluid) is injected into the cystic cavity, and generally will not seep out of the cyst, so there is no adverse effect on the peripheral tissues or the whole body. This treatment is easy to operate, with few complications, little pain to the patient, and low treatment cost, so its application in the clinic has received more and more attention. since the 90’s, this treatment has been rapidly popularized at all levels of hospitals in China, benefiting countless patients with hepatic and renal cysts, and it has a high clinical value. Usually, small and asymptomatic cysts can be left untreated, while cysts with a diameter of more than 5 cm and symptoms of compression are the indications for treatment.