In this study, subjective well-being of 81 adult cerebral palsy (CP) patients who had been discharged from our hospital was evaluated using the Philadelphia Geriatric Center Morale Scale. They were questioned about their life and physical condition. The results were as follows: 1) The subjective well-being of CP patients in their late 30 years to early 40 years was lower than that of these in their early 30 years. 2) The subjective well-being of CP patients whose physical health was deteriorating, due to falling stamina, appearance of pains and gait disturbance, was lower. 3) Subjective well-being was determined by the convenience of social environment and job integration. These results suggest that age and progression of disability are important factors for life satisfaction in middle-aged and elderly out-patients with CP.