The kidney is one of the organs where cystic disease most often occurs. Cysts can occur anywhere in the renal unit. Renal simple cysts are most often detected unintentionally during ultrasound, CT or urography. Clinical manifestations such as abdominal pain, abdominal mass, hematuria (rupture of the cyst), and hypertension may occur when a large cyst compresses the renal parenchyma. The main danger of cysts is to damage renal function by compressing the kidneys. There are three treatments for renal cysts: 1, puncture drainage + injection of sclerosing agent; 2, open cyst opening; 3, laparoscopic cyst opening. Each of the three treatments has its own advantages and disadvantages, puncture surgery has a high recurrence rate, open surgery is very traumatic, laparoscopic surgery only needs to make three small holes in the lumbar region, which has the advantages of small trauma, fast postoperative recovery and so on, and you can get out of bed the next day after the operation, which in recent years has become the first choice of renal cysts treatment.