There is no clear relationship between allergic rhinitis and lung cancer, clinically there are the following analyses: 1. Allergic rhinitis occurs mainly due to inhalation of allergens in the nasal cavity, which is induced by allergens, clinically it mainly involves sneezing, runny nose, itchy nose and other related symptoms. 2. The occurrence of lung cancer is not directly related to allergic factors, but mainly related to long-term smoking, stimulation of carcinogenic factors, family genetic history, and other factors. The occurrence of lung cancer is not related to allergic rhinitis, and allergic rhinitis will not induce or lead to the appearance of lung cancer, and the appearance of lung cancer will not aggravate or induce the appearance of allergic rhinitis.