Riding a bicycle with improper protection may have an effect on children’s reproductive organs in general. Usually when children ride bicycles, they will touch their genitals, and the cushion will compress the urethra, scrotum, perineum and other parts of the body when riding a bicycle. Short time riding will not affect reproductive health, but long time riding bicycles may affect the function of testes, prostate, seminal vesicle glands and other functions, and vibration when riding bicycles may also affect the spermatogenesis function of the testes. Children can generally carry out swimming programs, swimming can promote the development of brain nerves, strengthen the perception of the surrounding environment, promote the absorption and consumption of food, can enhance children’s resistance, promote bone development, but also to help children to reduce the pressure of the body and learning; children can also play ping-pong, rope skipping, basketball and other sports, which can exercise the child’s hands, eyes, limbs, and the coordination of the brain. It is recommended to pay attention to the children’s diet and the adjustment of bad habits, do not recommend long time riding a bicycle, if there is discomfort, go to the regular hospital in time for medical treatment.