To observe the clinical effect of plasma column electrode in the treatment of delayed bleeding after PCNL and simple renal cyst. Methods: From March 2011 to September 2017, we retrospectively analyzed the clinical data of 9 cases with delayed bleeding after PCNL and 17 cases with simple renal cyst. The plasma column electrode was adopted to stop bleeding and to resect the cyst wall. Results: Patients with delayed bleeding after PCNL were successfully stanched by using plasma column electrode;

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... e renal cyst was successfully removed and decompressed by plasma column electrode through percutaneous ureteroscopic deroofing of renal cyst. Conclusions: The plasma column electrode has the advantages of accurate, safe, simple and small trauma in the treatment of delayed bleeding after PCNL and simple renal cyst. It is suitable for popularization and use.