[RESULTS] The curative effect of postpartum retention of urine was obviously superior to that of postoperative and prostate-induced urinary retention in the ebservation group , and the effect of urinary retention due to different etiology in the observation was also superior to that in the control group in the ebservation group [ in the observation group total effective rate was 88.6 % ( 47/53 ) in postpartum retention of urine , 50.0 % ( 3/6 ) in prostate-induced urinary retention and 68.4 % ( 13/19 ) in orthopedic postoperative retention of urine while in the control group total effective rate was 69.4 % ( 25/36 ) in postpartum retention of urine , 20.0 % ( 1/5 ) in prostate-induced urinary retention and 38.5 % ( 5/13 ) in orthopedic postoperative retention of urine ) ] .