The purpose of the study was investigating the mood state of elderly people who participated in a fitness program. All participants were 65 years old and above. They attended the program twice a week; the program made up of two kinds of exercises: aerobic dance in the pool, and aerobic dance and recreational sports in the gym. The total number of days they attended the program was 57. The rate participation rate was 84.2%. The result was that one (vigor) of six parameters of mood states was higher than normal people's T score. It indicates good mood state. This mood state persisted before and after the exercise program.