The aim of the study was to compare the diagnos tic ultrasonographic findings in varicocele pre and postoperatively using two different sonographic sites (scrotal and inguinal ) and to detect recurrence after surgery . The study was carried out on 20 infertile patients, also 12 fertile males were taken as control group . All patients were subjected to history taking, general and local genital examinations . Conventional semen analysis and ultrasonography were done before operation and three months later . The results showed that there was significant improvement in the diameter of spermatic veins and in sperm count and motility after operation . In conclusion , colour Doppler sonography is useful in the diagnosis and follow up of treatment results in varicocele patients.