During hypoxic attacks of Tetralogy of Fallot, for mild cases, adopting the knee-chest position can provide relief. Severe cases should immediately receive oxygen and be given relevant medication treatment. Normally, attention should be paid to removing factors that cause hypoxic attacks, such as anemia and infections, and keep the child as calm as possible. For cases where hypoxia cannot be effectively controlled through the above measures, emergency surgical repair should be considered.