The hazards of nose picking include infection, nosebleeds, and damage to the nasal mucosa. 1. triggering infection: children lively and active, small hands everywhere to touch touch, if cleaning is not timely nails will have a lot of viruses, bacteria, picking the nose will be viruses, bacteria into the nasal cavity, and then often picking the nose may be the nose hairs picking off the barrier effect will be weakened, increasing the chances of upper respiratory tract infections. 2. Nosebleed: the child’s nasal mucosa is more fragile, capillaries are more abundant, the child picking the nose is easy to pick through the capillaries, triggering the phenomenon of nosebleed. 3. Damage to the nasal mucosa: children repeatedly picking their noses will lead to injury to the nasal mucosa, there may be erosion, increasing the sensitivity of the nasal mucosa, but also increase the chances of rhinitis. There are many other harmful effects of children picking their noses, parents can often interact with their children to do games, increase the humidity of the air, go out and wear a mask, etc., to reduce the chances of children picking their noses, to help children slowly change the habit of picking their noses.