A, physiological nasal congestion 1, the reason: the baby’s nasal structure development narrow, in addition, the newborn nasal mucosa vascular blood supply is very rich, especially vulnerable to external environmental stimulation, resulting in swelling. Once there are secretions or dust and other foreign objects, it is easy to block in the nasal cavity, over time, some will form some hard objects, resulting in nasal congestion. 2, how to do (1) steam smoked nasal cavity, hot towel over the nose, be sure to pay attention not to burn the newborn. (2) Use cotton swabs dipped in water to gently moisten the hard boogers, soften them and then pull them out with cotton swabs to solve the baby’s stuffy nose. (3) Spray with sea salt water, people will have a physiological reflex, which is to sneeze, children sneeze a sneeze to spray out the snot. (4) If the nasal congestion is particularly serious, very sticky and difficult to discharge, affecting breathing, you can use a professional nasal aspirator. Pathological nasal congestion 1, nasal congestion caused by viral infection (1) nasal congestion is not very serious, you can eat milk and sleep normally, you can treat the symptoms at home. (2) If the nasal congestion is very serious, affecting feeding and sleeping, and also combined with other symptoms, such as irritability, cough, fever. You need to go to the hospital to improve the nasal congestion under the guidance of the doctor. 2.Nasal congestion caused by allergy: avoid allergens. 3.Nasal congestion caused by abnormal nasal development: go to the ENT department of the hospital for treatment.