Picking the nose is a very bad habit and patients are advised to correct this habit. Clinically, it has the following hazards: 1. If you repeatedly pick your nose for a long time, you will easily damage the skin of the nasal vestibule and the mucous membrane at the front of the nasal septum. The damage to the nasal vestibule will lead to the patient’s susceptibility to nasal vestibular inflammation, localized dryness and pain in the nasal vestibule, and even the appearance of nasal boils, damage to the mucosa of the front of the nasal septum, because the submucosa is very rich in blood vessels, prone to arterial bleeding in the nasal septal area, once it occurs, will lead to serious consequences; 2, repeatedly buttoning the nose will lead to the nasal vestibule and the nasal septum mucosa nasal hair is scarce, once the nasal hair is scarce, so that The nasal cavity loses its first defense system, so it is very easy to get upper and lower respiratory tract infections; 3, people in the process of repeatedly picking the nose, will bring viruses and bacteria into the nasal cavity, especially easy to induce upper and lower respiratory tract infections.