Children always picking their noses may be related to nasal dryness, nasal infection, nasal foreign body and other factors, specifically analyzed as follows: 1. Nasal dryness: children’s internal nasal cavity is dry, which may lead to secretions easily crusted, hindering breathing, so children will often pick their noses with their hands to alleviate the discomfort. 2. Rhinitis: the child may be accompanied by nasal congestion, nasal itching and other reactions, so the child will often pick the nose, rub the nose and other actions to relieve the discomfort caused by nasal inflammation. 3. Nasal foreign body: when children play with toys, if some relatively small toys into the nasal cavity, there may be a sense of foreign body, by constantly digging the nose, rubbing the nose in the hope that the foreign body will be removed. Children often picking their noses, there may be other reasons, it is recommended to go to the hospital in a timely manner for relevant examinations, clear causes and then actively treat the symptoms.