Objective To Study the treatment of high risk patients with binigu prostatic hyperplasia using transurethral vaporization of prostate(TUVP). Methods 60 cases of acute or chronic urinary retention were treated by TUVP after preliminary urine diversion and adequate preoperative preparation.The average age of 60 cases was 80(72～88)years. Results The function of urination recovered well after operation.The maximum urination flow rate increased from (7.4?3.5)ml/s to (18.6?5.2)ml/s( t =-13.23, P =0.000);The avarage urination flow rate increased from(3.3?1.5)ml/s to (12.6?2.6)ml/s( t =-23.15, P =0.000);The residual urine decreased from(381.3?65.3)ml to (30.5?8.4)ml( t =36.17, P =0.000). Conclusions TUVP has the advantages of minimal invasion,safety,good efficacy and less complications and it fits for the treatment of high risk patients with severe complications.