The mucosa in the nasal cavity is red, swollen and inflamed. Consider the symptoms of nasal vestibulitis. Frequent nose picking, nose hair plucking, long-term inhalation of harmful gases, foreign bodies in the nasal cavity, allergen irritation, etc. can lead to nasal mucosa inflammation. When the nasal cavity is red, swollen and inflamed, it can be treated with local application of erythromycin eye ointment, mupirocin cream and other antibacterial ointment. When the symptoms are serious, it can also be treated with oral antibiotics. For inflammation of nasal mucosa caused by irritation of allergic factors, anti allergic drugs should be taken orally or sprayed locally, and daily contact with allergens should be avoided. At ordinary times, we should avoid bad habits such as picking nose and plucking nose hair, stay away from the polluted living environment, and wear masks when going out.