Some rhinitis is related to the patient’s decreased immunity, but there are also some rhinitis that are not directly related to the patient’s decreased immunity, mainly the following analysis: 1. Rhinitis that is related to the patient’s immunity is commonly associated with acute rhinitis, allergic rhinitis and other related diseases. Acute rhinitis, also known as the common cold, patients with decreased immunity and resistance, after the inhalation of viruses in the nasal cavity, the virus induces a reaction in the nasal cavity of the patient. Swelling of the mucous membrane of the nasal cavity and runny nose appear, which in severe cases can lead to systemic manifestations in patients, such as fever, headache, dizziness, general muscle aches and other related symptoms. Some patients develop allergic rhinitis, which is related to low immunity. When the patient’s immunity is low, external allergens entering the nasal cavity can also easily trigger the patient to develop allergic rhinitis.2. The appearance of rhinitis is not directly related to the patient’s low immunity, for example, chronic rhinitis may be related to the patient eating a spicy, stimulating diet, but also to the weather, climate, air pollution and other factors.