Babies always rub their noses, there may be nasal secretions, air dryness, acute rhinitis, allergic rhinitis and so on. 1. Nasal secretions: nasal mucosa will have secretions, if the secretions are more, may cause nasal itching blockage, affecting breathing, so the phenomenon of rubbing the nose. 2. Dry air: dry indoor air, cold, nasal mucosa will also have symptoms of itching, always rubbing the nose. 3. Acute rhinitis: when the nasal mucosa is infected by viruses and bacteria, the local stimulation will cause congestion and edema, and there will be itching and discomfort, and a runny nose. 4. Allergic rhinitis: children exposed to allergens, such as dust, pollen, etc., causing itching of the nasal mucosa, but also easy to rub the nose, accompanied by sneezing, runny nose. Baby always rubbing the 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.