Baby nasal congestion and thick nasal mucus may be caused by colds, rhinitis, sinusitis and other factors. 1. Colds: due to the baby’s low immunity, parents in the daily care is not appropriate, may lead to the baby with a cold, cold aggravation will lead to nasal congestion, nasal mucus sticky, accompanied by fever, coughing, sneezing and other symptoms. 2. Rhinitis: may be related to allergies, infections and other factors, resulting in one or both sides of the baby’s nose, nasal congestion, accompanied by itchy runny nose, and the nasal mucus is relatively thick. 3. Sinusitis: usually associated with pathogenic infections, such as bacterial infection or fungal infection, resulting in inflammation of the mucous membrane of the sinuses, the formation of sinusitis, which will make the baby nasal congestion, nasal mucus thick and other symptoms, may also be accompanied by headache, head swelling, fever, mental depression and other symptoms. Baby nasal congestion and sticky nose, there may be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.