1. Why do babies snore? Babies snore because their airways are narrower than adults and are prone to obstruction, causing a vibrating sound when the air passes through. In addition, if the baby\’s nasal cavity is swollen due to colds, nasal congestion, allergies, etc., it will also narrow the respiratory tract and cause snoring. 2. Does snoring have any effect on the baby? Generally speaking, occasional slight snoring will not affect your baby. But if it occurs frequently or lasts for a long time, it needs attention. Long-term snoring may lead to decreased sleep quality and even affect health.