A 34-year-old woman had history of bronchial asthma in childhood, was admitted complaining of coughs and wheezes. Chest X-ray examinations showed bilateral hilar lymphadenopathy. A diagnosis of bronchial asthma was made because of her past history, reversible airflow limitation and moderate bronchial hyperreactivity. In addition, findings of chest X-ray films and TBLB specimens were indicative of pulmonary sarcoidosis. When bilateral hilar lymphadenopathy disappeared, her wheezes and bronchial hyperreactivity also improved. In this case, it was suggested that pulmonary sarcoidosis was a factor which worsened bronchial hyperreactivity and bronchial asthma which had been in remission.