This study is mainly focus on the satisfaction degree of programs which were been held in city park. The case study of this study is Tokyo metropolitan city park which planed programs and have managed them for approximately 20 years. For the purpose, this study used the questionnaire about the satisfaction degree of programs in 2 Tokyo metropolitan city parks which are held nature observation programs, after analysis of programs of city parks. This study used analysis method of cross-tab, factor analysis and multi-regression. The result are as follows: 1. As the result of factor analysis, 6 factors which are determined the satisfaction degree of programs are found. Also as the regression result between satisfaction degree and 6 factor, the satisfaction degree is positively affected by first factor which is identified program contents and forth factor which is identified marketing part of program. 2. On the organization of managing program, the sponsorship privately-managed citizen group is more favorable than the sponsorship by volunteer. 3. In the participant attribute, participants who are older than 50 showed high distribution, and there is no difference between sex.