Varicocele is the most identifiable abnormality in male infertility, being present in up to 40% of infertility. The current study confirmed that Color Doppler Ultrasonography preoperatively could show accurately clinical varicocele and detection of subclinical varicocele. Postoperatively, Color Doppler U/S proved to be an easy, effective, convenient and non-invasive instrument for determining the recurrence of varicocele and surgical complications (hydrocele, testicular hypotrophy and epididymitis).