Infants who always make a growling sound from the throat need to be treated according to the cause. The most common cause is laryngeal cartilage insufficiency, which can be treated with vitamin D and calcium supplements. Small infants with laryngeal cartilage insufficiency can have a roaring sound, which is often accompanied by easy to frighten, excessive sweating, occipital baldness and other manifestations of vitamin D deficiency, which can be treated with oral vitamin D and calcium under the guidance of a doctor, and can be gradually relieved as they grow older. Infants with respiratory infections, phlegm obstructs the airway, there will be roaring sound, mostly in bronchitis, pneumonia, etc., can be accompanied by fever, coughing, breathlessness and other manifestations, this time should be in time for pediatrics, such as the combination of bacterial infections can be prescribed the use of antibiotics, such as cefixime particles orally, but also to give aminobromine and other phlegmifying drugs. In short, when the baby throat roaring sound, it is recommended to timely pediatric consultation, clear cause, take targeted treatment.