Baby sleep heavy breathing, may be physiological factors, may also be disease factors. 1. baby if too obese lead to airway pressure, too strenuous activities during the day lead to sleep too deep or improper sleeping posture, leading to airway is not smooth, may appear when sleeping heavy breathing phenomenon, these cases generally do not need special treatment, change the sleeping posture can be relieved most of the time. 2. If the baby suffers from respiratory tract infections resulting in nasal congestion, or adenoid hypertrophy, congenital laryngeal asthma and other diseases, due to the narrowing of the airway, the phenomenon of heavy breathing during sleep, the need for interventions against the cause of the disease can be relieved. Babies sleep heavy breathing, there may also be other reasons, it is recommended to go to the hospital in a timely manner to improve the examination to determine the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.