Left kidney cyst drug treatment is ineffective, if the cyst is too large or have pressure symptoms need surgery, usually can be cured, but may recur, need regular review. Kidney cysts are usually unilateral, single, or multiple or bilateral at the same time, usually no symptoms, mostly found during health checkups or other disease checkups, but also can be seen in hematuria, abdominal masses and other clinical manifestations. Simple renal cysts do not affect renal function, no symptoms and no complications of patients do not need treatment, the emergence of pain, discomfort, urinary tract obstruction, infection, bleeding, hypertension, tumors, etc. Early treatment, the main treatment for surgical treatment. Left renal cysts can be treated by cyst puncture and sclerotherapy. Surgery should be considered for huge cysts with a diameter of more than 10cm and a volume of more than 500ml, cysts suspected to be cancerous, or cysts recurring after puncture; active treatment of this disease can effectively relieve symptoms and improve the prognosis, and there is a possibility of recurrence after treatment by cyst puncture and sclerotherapy. It is recommended that patients with renal cysts should go to regular hospitals for timely consultation and examination, determine the treatment plan according to their conditions and examination results, and undergo regular review.