It is recommended that infants swim no more than twice a week for no more than 30 minutes each time. The development of children's bones and muscles is far from perfect. Swimming can help them further improve their vital capacity and balance. However, excessive swimming may affect the normal development of muscles and bones, and repeated temperature changes may cause digestive dysfunction, diarrhea, vomiting, bloating and other symptoms. In addition, changes in hot and cold are also likely to cause respiratory infections in children, so we must pay attention to the frequency of swimming and the water temperature during this process. In addition to the water temperature, the indoor temperature of swimming is also very important. Too low or too high room temperature will also affect the child's physical condition. In addition to ensuring the frequency and time of the baby's swimming, we should also pay attention to choosing a safe venue to ensure the hygiene of the swimming water, otherwise it may cause harm to the child, so we must pay attention to the safety of the child during swimming.