Kneading the testicles will have many harmful effects, which may lead to higher scrotal temperature affecting spermatogenesis, nerve damage, testicular torsion and other conditions. 1. Higher scrotal temperature damages the testicles: the testicles are in the scrotum, the environment is lower than the body temperature of about 1~2 ℃, excessive kneading of the testicles leads to local temperature abnormalities, affecting spermatogenesis, affecting the quality of semen. 2. Nerve damage: the testicles are rich in nerves, excessive kneading may damage the nerves, resulting in spasmodic pain, or even neurogenic shock in severe cases. 3. Testicular torsion: kneading the testicles causes excessive rotation of the testicles, resulting in testicular torsion, which may cause ischemia or even necrosis of the testicles. To summarize, in daily life, pay attention to protect yourself and avoid damage to testicles.