We studied sonography of saline filled male urethra in 21 cases, who had a urinary symptoms of urethral stricture. There were 11 cases of anterior urethral stricture, 2 cases of stricture with stone, and 8 cases of posterior urethral stricture. Sonographic length of urethral stricture was compared with that of retrograde urethrography compared to surgical findings in 7 out of 21 cases. The average lengths of anterior urethral strictures measured by sonography and retrograde urethrography were 28.15 and 18.75 mm. In cases of operation, the sonographic measurement was confirmed to be more accurate than urethrographic measurement. Sonography is easier to perform, more available in follow up and has no radiation hazard to the testis than X-ray study. Sonography is more accurate to determine the site, length degree of anterior urethral stricture than X-ray study. Sonography is more accurate to determine the site, length and degree of anterior urethral stricture than X-ray study. A sonographic evaluations concerning posterior urethral stricture is impossible because of angulations of the urethra in the posterior urethra, retrograde urethrography is preferable.