Rhinitis may be caused by the patient’s low immunity, which is commonly analyzed as follows: a. Acute rhinitis, also clinically known as the common cold, is related to the patient’s low immunity. When the patient’s immunity is low when the nasal mucosa resistance to viruses decreases, once the nasal cavity has a virus invasion, it is easy to induce the patient to appear in the acute inflammation of the nasal mucosa, resulting in swelling of the nasal mucosa, a large number of oozing. Clinically, it is mostly manifested as headache, fever, muscle aches and pains all over the body, nasal dyspnea, large amount of runny nose and other related cold symptoms, which is very much related to the patient’s low immunity. Second, allergic rhinitis, is currently believed to have a certain relationship with the patient’s low immunity, when the patient’s immunity is low, the external allergens once into the nasal cavity is easy to induce the patient to appear allergic rhinitis. Clinical manifestations of repeated sneezing, watery nasal discharge, nasal dyspnea, decreased sense of smell, itchy nose and other related symptoms and performance. Third, the current study shows that some atrophic rhinitis and patients with immune disorders, low immunity may also have a certain relationship. In short, patients should normally enhance immunity, appropriate exercise, increase nutrition, the prevention of rhinitis has a certain effect.