Nasal congestion in babies without snot may be caused by turbinate hypertrophy, nasal foreign body, allergic reaction and other factors. 1. Nasal turbinate hypertrophy: when the nasal cavity is infected by external viruses and bacteria for a long time, it will lead to inflammatory reactions such as congestion and edema of the mucous membrane of the nasal cavity, so that the mucous membrane of the nasal turbinate is thickened and turbinate hypertrophy will be formed, and then the baby will have the symptom of nasal congestion without nasal mucous. 2. Nasal foreign body: if the nasal cavity for a long time accumulation of dried snot or other foreign bodies, can not be timely eliminated, will also cause nasal congestion but no snot symptoms. 3. Allergic reaction: babies who are allergic to pollen, dust and other substances may develop allergic rhinitis after exposure to these allergens, causing congestion of the mucous membrane of the nasal cavity, which may lead to nasal congestion in babies with no nasal discharge. As there are many reasons for babies to have nasal congestion without nasal discharge, it is recommended to go to the pediatric department of the hospital for a comprehensive examination to make a clear diagnosis.