The dangers of picking your nose include damaging nasal hairs, causing bleeding and infection. 1. Damage to nasal hairs: Nasal hairs grow in front of the nostrils and can help block particles in the air, which is a protective barrier for the nose. Long-term nose picking can damage the nasal hairs, resulting in shedding, external dust, bacteria and other harmful substances can be directly stimulated to the nasal mucosa, causing the nose to appear a variety of uncomfortable symptoms. 2. cause bleeding: because the mucous membrane in the nasal cavity is relatively soft and fragile, and the blood vessels under the mucous membrane are relatively rich, if you have the bad habit of picking boogers, or picking boogers with too much force, it is easy to lead to nose bleeding. 3. Infection: the human hand may exist a large number of bacteria, picking boogers can bring pathogenic bacteria into the nasal cavity, easily lead to inflammation and infection of the nasal cavity. In addition, because the nasal cavity is located in the face of the “dangerous triangle”, nasal veins and intracranial vein connection, there is no valve to prevent reflux, when the nasal cavity is infected, the infected foci of the vein into the cavernous sinus, which triggered intracranial infections, and the serious cases may also be life-threatening. It is recommended that you avoid picking your nose with your hands to avoid serious damage. If you need to clean up the secretions inside your nose, use moist cotton swabs or tissues to clean and wipe.