This study has aims to describe the dynamics of community that occur in Sidodadi 2 farmers’ group of community forest in Pajangan District, Bantul Regency. The indicators used in this study include objective function, task function, group development, group atmosphere and group cohesiveness. The resource person used in this study was determined by the key informant method, namely group members who understood the situation of the group in depth. This study used descriptive qualitative method that the results of the study are obtained by conducting interviews and observations. The results showed that group dynamics that occurred in Sidodadi 2 farmers’ group of community forest in the objective function, task function, and group development were not dynamic, while for group atmosphere and group cohesiveness showed that the results of dynamic group were dynamics. Internal factors that influence group dynamics that occur were group experience, non-formal education and motivation. Non-formal education was a dominant internal factor in influencing dynamics. External factors that influence the dynamics of tools and seedlings, counseling, training and mentoring were heated, for training was the dominant external factor in influencing the formation of group dynamics.