The 7-year-old boy always rubbing his nose may be due to imitation, mental stress and other factors, and may also be due to allergic eczema, allergic rhinitis and other diseases. 1. Physiological factors: 7-year-old boy always rubbing his nose, may be out of curiosity to imitate the psychology, learning the actions of others. Touching the nose may also be mentally overstressed, in order to relieve the tension made by the action, most of them are normal phenomenon. 2. Allergic eczema: when the 7-year-old boy’s skin is more sensitive, the external environment temperature changes faster, or contact with mosquitoes, etc., may lead to the face and the tip of the nose skin allergic eczema. Allergic eczema will produce itching, redness, swelling and other uncomfortable symptoms, leading to the child to appear to rub his nose. 3. Allergic rhinitis: When children come into contact with allergens, such as common pollen and animal hair, it can lead to nasal itching, paroxysmal sneezing, nasal congestion and other symptoms. A few children also experience itching sensations in the soft palate, eyes and throat. There are more reasons why a 7-year-old boy keeps rubbing his nose, and parents are advised to observe closely and seek medical attention when necessary.