The patient was discharged from the hospital for further treatment after a failed indwelling catheterization and suprapubic cystostomy. Physical examination, auxiliary investigations Urography: posterior urethral atresia. Erectile dysfunction Diagnosis, treatment Posterior urethral atresia, elective end-to-end posterior urethral anastomosis was performed, an inverted Y-shaped perineal incision was made, and the urethra was explored with two F20 urethral probes through the urethral orifice and cystostomy orifice, respectively, and a 5-cm-long urethral stricture was seen in the bulbous membrane. 8 stitches of 4-0 imported absorbable thread were preset, F18 double-lumen catheter was inserted, and then the preset sutures were ligated to form an end-to-end anastomosis at both ends of the urethra, and the anastomosis was checked for tension, then the urethral spongy body was intermittently sutured with 3-0 imported absorbable thread to further reduce the tension, and the incision was closed layer by layer, and F20 double-lumen catheter was placed for cystostomy. This is a routine operation of posterior urethral atresia, but because the patient underwent two internal urethral incisions, the intraoperative scar was obviously heavy, which increased the difficulty of the operation, so the indication of internal urethral incision should be strictly grasped, and reckless internal incision will bring a lot of unnecessary trouble to the subsequent treatment.