Usually, proper rubbing of testicles can detect abnormalities of testicles at an early stage, but rubbing testicles many times for a long period of time may affect their physiological functions. Testicles are male reproductive organs, which have the functions of sperm production and hormone secretion. Appropriate rubbing of testicles can promote local blood circulation and early detection of testicular masses, tumors and other abnormalities. If men rub the testicles for a long period of time or within a short period of time for many times, or rub the testicles with force, it may damage the local tissues, or even affect the normal function of the testicles, which will have an impact on men’s health and quality of life. In order to ensure the health of testicles, men should pay attention to wearing loose-fitting, pure cotton underwear in daily life, avoiding friction and stimulation by foreign objects. Men should also pay attention to sexual hygiene, avoid unclean and excessive sexual life. Daily can also be appropriate for deep squatting, running, swimming, etc., to avoid sedentary, standing for a long time. If men rub their testicles and find lumps or symptoms such as pain, they should seek medical examination and treatment in time.