If an infant suffers from the condition of pneumonia, dyspnea or heart failure can occur with severe pneumonia. When an infant has difficulty breathing, if oxygen is not inhaled in time, it is very likely that the infant will suffocate, so it is necessary to administer oxygen when the pneumonia is more serious. Oxygen is usually recommended by the doctor when the infant’s symptoms are extremely severe, with a purplish-blue color on the face or other more serious conditions. Oxygen intake is also not harmful to the baby’s body, and the timing of the intake should be chosen according to the baby’s specific condition.