Abstract: Objective：To investigate the clinical efficacy and complications of Memokath prostatic stent in the treatment of urinary retention due to benign prostatic hyperplasia. Methods：Two BPH patients (age 61 and 80 years) had Memokath prostatic stent inserted with flexible cystoscopy in October, 2016. Both of them were in urethral catheter indwelling status. Preoperative International Prostate Symptom Score (IPSS) were 26 and 24 respectively. Prostate volumes were 33.4 and 32.9 mL. Results：Both patients were successfully operated, and the operation time were 30, 20 min, respectively. Both patients regained the ability of spontaneous urination immediately after operation. The postoperative PVR was negative three weeks and one week after operation. IPSS were 6 and 12. Maximum flow rates were 24, 14 mL/s. No serious complications such as urinary incontinence, urinary tract infection and stent dislocation were observed in both patients. Conclusions：Memokath spiral thermoexpandable prostatic stent is simple, safe, and effective in the treatment of urinary tract obstruction in the prostate. Further observation is necessary for longterm efficacy and complications.