1.What is varicocele? Varicocele is the abnormal elongation, expansion and tortuosity of the trapezoidal plexus of the spermatic vein, which is mostly seen in young and middle-aged men and accounts for about 10% of the male population. Varicocele mostly occurs on the left side, and about 40% of them can present with bilateral varicocele. For adolescent males, recent studies have reported. 2. What are the dangers of varicocele? First, it is now recognized that varicocele can affect fertility and it is one of the main causes of male infertility. Varicocele can lead to a decrease in semen quality, resulting in infertility. In the literature, about 40% of adult men with primary infertility and 80% of those with secondary infertility have varicocele. Secondly, some patients may have a sensation of falling scrotum (cramping) due to the gravitational effect of the tortuous thickened veins pulling down on the testes, which may radiate to the groin area and lower abdomen, aggravate when standing and walking, and reduce after lying down and resting. Finally, most scholars believe that the average level of androgens in the blood of patients with varicocele is lower than that of normal men of the same age, and the testicular volume is smaller than that of normal men. The reduced androgen level may lead to early out of line hypogonadism and early out of line sexual dysfunction in some men. 3.Which patients need treatment? ①Male infertility caused by varicocele, regardless of the degree of varicocele, should be promptly treated by surgery once diagnosed. ②Severe varicocele with obvious symptoms. ③Those who suffer from chronic prostatitis and varicocele at the same time, and whose prostatitis cannot be cured for a long time, can choose varicocele surgery. ④Adolescent varicocele, if accompanied by a reduction in the volume of the affected testicle, should be treated with surgery as early as possible to prevent infertility in adulthood. ⑤ Mild varicocele, if the semen analysis is normal, should be followed up regularly, once there is abnormal semen analysis, testicular shrinkage and softening texture should be operated in time.