Frequent masturbation does not usually damage the kidneys. Frequent masturbation in men may lead to inflammation of the reproductive system, such as urethritis, prostatitis, seminal vesiculitis and glans penis; vaginitis may occur in women, but it has no direct effect on the kidneys. Frequent masturbation in men may lead to inflammation of the reproductive system such as urethritis, prostatitis, seminal vesiculitis, etc.; it may also lead to physical fatigue, lack of concentration, and even insomnia and other problems. Frequent masturbation in women can easily cause vaginal inflammation, urethritis and bladder inflammation. Kidneys belong to the urinary system organs, and the reproductive system organs are far away from each other, masturbation generally does not affect the kidneys. However, if frequent masturbation leads to cystitis and is not treated in time, it may induce acute pyelonephritis. Overall, frequent masturbation will not affect the kidneys, but may affect other organs of the reproductive system, frequent masturbation is not recommended. If you have discomfort after frequent masturbation, you need to go to the hospital for examination.