Objective To investigate the clinical value of fractional exhaled nitric oxide (FeNO) measurement in the follow-up of allergic bronchopulmonary aspergillosis (ABPA). Methods The retrospective analysis was carried out in 15 patients who were diagnosed as ABPA in Beijing Chaoyang Hospital and International Hospital of Peking University from January 2013 to January 2016 and whose total IgE of serum allergens and FeNO level had been tested. Two stages (aggravating stage and non-aggravating stage) were set according to the patients’ symptoms and treatment reaction to Glucocorticoid. Total IgE and FeNO level were compared between the different stages. Results A total of 15 patients were enrolled. There were 10 female cases and 5 male cases with the average age of (51.67 ± 13.95) y. The FeNO level in the aggravating stage was higher than that in the non-aggravating stage (P < 0.05). The total IgE level was not significantly different between the two stages (P > 0.05). Conclusions FeNO level might be an predictive factor for assessment of aggravation of allergic bronchopulmonary aspergillosis patients. It has important value in ABPA treatment and follow-up.