Renal cysts can generally occur in any part of the kidney, and there is no clear and specific site of multiple occurrence. Renal cysts can occur in any part of the kidney and are generally unilateral, solitary, or, less commonly, multiple or bilateral at the same time. The etiology of the disease is not yet fully understood. Overall, the cysts originate from the renal tubules and gradually form diverticulum-like structures, which later develop into separate, intact cystic cavities. A proportion of patients with simple renal cysts show no manifestations. If intracapsular hemorrhage occurs in renal cysts, it will lead to rapid increase in the size of the cysts, which in turn will involve the renal peritoneum and stimulate some of the sensory nerves, causing symptoms such as lumbar distension and low back pain. For asymptomatic and uncomplicated patients, no treatment is needed and regular review is sufficient. To sum up, if you suffer from renal cysts, if there is pain, discomfort, urinary tract obstruction, infection, bleeding, high blood pressure, tumors, possible rupture or ruptured cysts should be treated as soon as possible, please follow the doctor’s instructions.