There are many reasons why newborns sneeze, most of them are physiological phenomena, and the specific situation needs to be analyzed in combination with their own symptoms. 1, newborn babies, the body will produce a conscious protective reflex to the outside world, this is a physiological phenomenon. Parents can find out if there are hidden germs in the baby by observing the sneezing condition of the newborn. 2, caused by the special physiological structure, newborn sneezing will also occur after eating milk, this is a normal phenomenon, may be cold air stimulation or air plush caused by nasal allergies. 3, caused by the cold indoor air, pay attention to the baby in addition to sneezing there are no other symptoms. Such as runny nose, bruising around the mouth, etc. 4.The surrounding environment is dusty, with pollen, paint and other stimuli. This is because the baby’s nasal cavity is not yet well developed and sneezing may occur in response to external stimuli. 5, sneezing is accompanied by shortness of breath, runny nose, nasal congestion, fever and other abnormal phenomena, parents should consider that it may be an upper respiratory tract infection or a viral cold, and should promptly take the baby to the doctor to avoid delaying the condition. Sneezing in newborns without other symptoms is considered normal and not a cause for concern. If it is accompanied by cough, fever, nasal congestion, etc., it is not normal and should be promptly checked and treated at the hospital.