目的　探讨外伤性后尿道断裂Ⅰ期手术吻合及预防尿道狭窄发生的机理。方法　采用腹会阴部联合切口 ,尿道置F18- 2 2双腔管做支架引流 ,尿道断端用 1- 0肠线间断外翻缝合。结果　 9～ 10周拔除尿管后排尿通畅 ,仅有 3例尿线变细 ,经尿道扩张后消失。随访 2年无 1例尿道狭窄。结论　创伤小 ,出血少 ,并发症少 ,术后排尿通畅。 Objective To investigate the surgical treatment of traumatic posterior urethral rupture of stage Ⅰ anastomosis and prevention of urethral stricture. Methods Combined abdominal perineal incision and urethral catheterization was performed with F18-2 2 double-lumen tube. The urethral stump was interrupted by everted suture of 1- 0 gut. Results Urine was cleared after removal of the catheter in 9-10 weeks. Only 3 cases of urine became thinner and disappeared after urethral dilatation. No cases of urethral stricture were followed up for 2 years. Conclusions Small trauma, less bleeding, less complications, postoperative urination patency.