Benign prostatic hyperplasia(BPH)is a benign hyperplasia of prostate gland cells of the urethra affecting increasing population.The most common method of treatment is transurethral resection of the prostate(TURP).But many complications may occur including intraoperative or postoperative hemorrhage,prostate perforation,urinary incontinence and bladder neck contracture.Transurethral balloon dilatation of prostate(TUDP)is a safe and simple method of treating BPH.It can be performed as outpatient operation and using topical anesthesia and sedation.TUDP can shorten the time of urethral catheterization.We can conclude that TUDP is an effective and economic way in treating BPH,while the long term efficacy remains to be observed.