The hazards of nose picking may cause damage to the hair follicles, nasal mucous membrane bleeding, nasal infections and so on. 1. Damaged hair follicles: nasal hair has the ability to block dust, bacteria, viruses and a variety of allergens, if you pick your nose for a long time, it is easy to pull down the nasal hair, but also lead to inflammation of the hair follicles and other symptoms. 2. Nasal mucous membrane bleeding: nasal mucous membrane is relatively thin, there are many capillaries in the nasal cavity, sharp nails will scratch the nasal mucous membrane, patients bleeding and other symptoms. 3. Nasal infection: due to the presence of various bacteria, viruses and other substances on the fingers, frequent picking of the nostrils is equivalent to these bacteria, viruses sent to the body, poor immunity, nasal cavity broken people are prone to infection. Therefore, it is recommended that patients change the habit of frequent nose picking and go to the hospital as soon as possible if they have any discomfort symptoms.