It is generally believed that children born by cesarean section are not as healthy as those born naturally. In recent years, many foreign studies have also linked cesarean delivery to ADHD, dysregulation, immune deficiency and even diabetes. A number of clinical observations have shown that children delivered by cesarean section are more likely to develop upper respiratory infections and respiratory diseases in the future. This is because children delivered by cesarean section are not squeezed by the birth canal and have a lot of fluid in their airways. If the initial airway cleaning is not proper and timely, the child may suffer from ‘wet lung syndrome’, which affects the development of lung function later. As to whether cesarean delivery is a cause of ADHD, dysautonomia, etc., these very subtle personality, physiological, and even qualitative effects on the child need to be observed more remotely. These observations are more difficult because the differences that occur are small and not easily observed.