The hazards of plateau reaction to children include two aspects: 1. The recent hazards are mainly manifested in the lack of oxygen in the plateau will cause certain damage to the child’s brain, headache, dizziness, irritability, irritability, insomnia, etc. Plateau reaction will also lead to nausea, vomiting, abdominal pain, indigestion, poor nausea and other gastrointestinal reactions, if caused by pulmonary edema will endanger the child’s life. 2, the long-term harm is mainly due to the lack of oxygen to the brain nerve damage will affect the child’s intellectual development, plateau reaction when serious pulmonary edema will leave sequelae, the child’s lung function will decline, resistance will become low, and can even induce the child to develop asthma and other sequelae, will often occur in the future life, seriously affect the child’s health.