Objective:To investigate the prevalence characteristics of allergic rhinitis (AR) in the Lanzhou region and analyze its correlation with the air quality index (AQI), household environment, and lifestyle habits. Methods:A total of 528 AR patients diagnosed at the Second People"s Hospital of Gansu Province from March 2022 to March 2023 were included in this study. Monthly average AQI values during the study period, including PM2.5, PM10, SO?, and other pollutants, were obtained from the Lanzhou Environmental Protection Bureau. A standardized questionnaire was used to assess household environmental factors and lifestyle habits. Logistic regression analysis was conducted to calculate the odds ratios (ORs) of environmental exposure factors, while Pearson correlation analysis was performed to examine the association between the monthly AR consultation rate and AQI. Results:Air pollution was significantly associated with AR incidence, with PM?? (p<0.01) and PM2.5(p<0.01) positively correlated with AR consultation rates. The highest AR consultation rate was observed during winter coal combustion pollution periods (p<0.01). Indoor dampness, mold, and smoking significantly increased the risk of AR (p<0.001), with mold exposure (OR=3.02) and smoking (OR=1.89) identified as major risk factors. Lifestyle habits also played a critical role in AR occurrence, with insufficient ventilation in winter increasing AR risk (p=0.02), whereas summer ventilation (p=0.04) and air purification (p=0.001) exhibited protective effects.Conclusion:The high prevalence of AR in Lanzhou is closely related to air pollution (PM2.5, PM10) and household environmental exposures (dampness, mold, smoking). Strengthening regional air quality management, promoting indoor moisture and mold control measures, and advocating for smoke-free home environments are recommended to reduce AR incidence.