The treatment plan for kidney cysts is like this, if the kidney cyst is below 4cm, no special treatment is needed, the ultrasound or CT of both kidneys should be reviewed once every three months to six months, if the kidney cyst is above 7cm, the pressure symptoms are obvious, treatment should be given, puncture and sclerotherapy can be used to prevent the cystic fluid from being re-produced, or surgery can be given. For cysts with infection, surgical incision and drainage, percutaneous puncture and drainage are feasible, and antibiotic anti-infection treatment is given at the same time. For cysts between 4-7 cm, they need to be treated only if hypertension and compression symptoms associated with cysts are confirmed, and if there are no such symptoms, they can be dynamically reviewed. In general, renal cyst is a benign lesion with very low incidence of malignancy, and in most cases only dynamic review is needed.