Masturbation is a normal physiological need, and long-term appropriate masturbation does not cause definite effects on the body. But if masturbation is too frequent or violent, it may cause genitourinary infection, neurological symptoms, sexual dysfunction and so on. 1. Genitourinary system infection: long-term masturbation will cause persistent congestion of the genitourinary system, swelling easily induced male circumcision glans, urethritis, prostatitis, seminal vesiculitis and other diseases, but also may cause female vulvovaginitis, vaginitis, urethritis, cervicitis and other diseases. 2. Nervous system symptoms: long-term masturbation may cause physical fatigue, resulting in dizziness, fatigue, tinnitus, memory loss and other nervous system symptoms. 3. Sexual dysfunction: long-term masturbation may cause erectile difficulties, premature ejaculation, decreased libido in men, and may also cause decreased libido in women. Therefore, excessive and frequent masturbation should be avoided, and if uncomfortable symptoms occur due to masturbation, you should seek medical treatment in time.