To evaluate improvement of mental disorders by spa therapy for 1-2 months, three kinds of psychological examinations, CMI (Cornel Medical Index), SDS (Selfrating Depression Scale) and CAI (Comprehensive Asthma Inventory) tests, were performed in 37 patients with asthma before and after spa therapy. 1. In CMI test, the scores of physical symptoms, respiratory symptoms, and CIJ symptoms significantly decreased after spa therapy. The score of psychical symptoms tended to decrease after the therapy, however, this was not significant. 2. The mean score of the subjects over 40 points in SDS test significantly decreased from 45.7 points before spa therapy to 37.5 after the therapy. 3. Mental disorders evaluated by various categories in CAI test were significantly improved after spa therapy. The average score in CAI test significantly decreased from 37.1 to 27.8 after the therapy. These results demonstrate that psychological disorders in patients with asthma are improved by spa therapy.