Swimming for children is able to strengthen the immune system, and proper exercise helps to improve the immunity of the organism. Children often go swimming is able to enhance resistance and improve the body’s immunity. Regular swimming can make the body’s ability to adapt to the outside world increased, so that the metabolism is accelerated, improve the body’s thermoregulation system. And regular swimming can increase the body’s resistance to disease, especially increase the resistance of the respiratory system. Swimming can increase the child’s growth and motor development, but also can promote the development of the child’s whole body muscle, especially for the development of skeletal muscle, is conducive to the healthy growth of children. But in moderation, excessive play can also have some side effects, such as loss of ligaments.