Preventive measures against varicocele include reasonable rest, dietary adjustments, and improvement of daily sleeping posture. 1. Reasonable rest: Avoid prolonged weight-bearing in work and life, and do not stand and walk for a long period of time, so as to prevent the increase of abdominal pressure, the pulling of the scrotum and the obstruction of perineal vein reflux. 2. Adjust the diet: daily diet should be improved to ensure balanced nutrition, consume more food containing crude fiber, and defecate regularly every day to prevent dryness or constipation, to prevent fecal matter from accumulating and compressing the left spermatic vein, and to reduce the incidence of varicocele on the left side. 3. Improve the daily sleeping position: adjust the sleeping position at night, try to take the left side sleeping position, the scrotum area to avoid the pressure of the bedding, is conducive to the return of blood to the spermatic vein. When the symptoms of varicose veins appear, it is necessary to consult a doctor as soon as possible for examination and treatment to prevent the aggravation of the disease.