Nasal congestion in infants and young children is mostly an accompanying symptom of epiglottitis, simple nasal congestion as long as it does not affect the sucking of breast milk, breathing, generally do not need to be dealt with, not to mention the need for X-ray and CT examination, because the face of the cranial bones and the sinuses have not yet developed. The common situation may be nasal crusts in the anterior nasal aperture, which can be moistened with water and cleaned up with a cotton swab. If it occurs frequently, use water, lotion, sesame oil, etc., 2-3 drops at a time for an unlimited number of times. Try not to use nasal decongestants and other drugs. If nasal congestion in infants and young children affects breastfeeding and breathing, and there are cases of breathlessness and cyanosis when sucking breast milk, they should be examined in the clinic to rule out stenosis, atresia or incomplete atresia of the posterior nostrils.