Varicocele is a common condition in young adults that is caused by dilated, tortuous and elongated blood vessels in the trapezius plexus of the spermatic cord due to stagnation of blood flow in the spermatic cord. In severe cases, worm-like dilated vessels can be seen above the testes or in the scrotal wall. The incidence is 10-15% in the male population and 15-20% in male infertility. The condition occurs mostly on the left side. There are two types of varicocele: primary and secondary. Primary varicocele is caused by dysplasia of the spermatic veins and valves. Secondary is caused by compression of the spermatic veins by renal tumors or other retroperitoneal tumors. Ultrasound examination of kidney, retroperitoneum and scrotum should be performed after varicocele is detected. Primary varicocele is an indication for surgery. Secondary ones will heal spontaneously after treating the primary one. Not all varicocele requires surgical treatment. The disease is a vascular disease characterized by varying degrees of dilatation and tortuosity of the trapezius plexus in the spermatic cord. There are two types of VCs, primary and secondary, according to their etiology. Primary VC may be caused by increased intravascular pressure, the left spermatic vein travels long and converges at right angles to the left renal vein, superior mesenteric artery and aorta to compress the left renal vein, which affects the return flow of the left internal spermatic vein, i.e., the “nutcracker” phenomenon (NCS), weak connective tissue around the internal spermatic vein and venous valve dysfunction, and incomplete closure of the spermatic vein. Inadequate closure, abnormal tissue structure of the spermatic vein wall, anatomical variation of the spermatic vein, and underdevelopment of the levator ani muscle are the anatomical factors or causes of dysplasia. Secondary causes of VC may include intra-abdominal or retroperitoneal tumors, hydronephrosis, and ectopic vessels compressing the superior spermatic veins. Surgical treatment is required in one of the following cases: 1. Causes infertility: stagnant blood in the varicose spermatic vein and long-term testicular temperature increase causing pathological and physiological tissue structure changes in the testes and epididymis and backflow of various substances secreted by the kidneys with renal venous blood can cause male infertility. 2, there are symptoms: mainly performance scrotal swelling, aggravated after long standing and exertion or have traction groin area, lumbar pain affect the quality of daily life and work. 3, adolescents with shrinking testicles and softening texture.