Babies often rub their noses, specifically for the following reasons: First, the nasal mucosa is dry, babies feel uncomfortable, so they will often rub their noses, can be given nostril drops such as vitamin AD drops to moisten the nasal mucosa, thereby alleviating the symptoms of the baby rubbing his nose. Second, due to habitual reasons, babies often like to rub their noses this habitual reason parents should try to gradually give correction, often rubbing the nose is also easy to cause the rupture of the nasal mucosa, which is likely to cause nasal bleeding phenomenon. In addition to applying drops to relieve the dryness of the nasal mucosa, oral anti-allergy medication, such as dextran or loratadine, should be given for anti-allergy treatment.