20 years old a week of sperm discharge a few times normal, there is no clear statement, the specific mainly depends on the individual physique, the body sex hormone secretion, living habits and other factors to decide. The 20s are in adolescence, the body androgen secretion exuberant, there may be physiological spermatorrhea, spermatorrhea frequency also varies from person to person, generally no more than 6 times a month, are normal, there are people do not have spermatorrhea, the specific see the situation varies from person to person. Usually should avoid contact with unfavorable sexual stimulation, more physical exercise, develop a good dietary hygiene habits, while controlling the frequency of masturbation, more outdoor exercise. If you have uncomfortable symptoms, you should go to the hospital in time for examination and treatment.