Newborns sleeping fast breathing also huffing and puffing, may be a normal phenomenon, or congenital factors, as well as respiratory tract infections caused by. The sound of huffing and puffing is usually caused by the newborn’s narrow nasal cavity and abundant capillaries in the nasal mucosa. When stimulated by cold air, nasal congestion and breathlessness will occur. If the newborn exists congenital laryngeal tinnitus, congenital narrowing of the airway, or lung dysplasia, it will lead to lack of oxygen in the brain and shortness of breath. If the newborn has an infection in the respiratory tract, it will stimulate the mucous membrane of the respiratory tract and nasal cavity, which will also lead to shortness of breath and also huffing and puffing while sleeping. Newborns with shortness of breath and huffing and puffing may also have other causes, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment.