The purpose of this research is to clarify firstly the psychological impact of green space conservation activities on staff and citizen, secondly the relationship between the volume of activities and the psychological impact, and thirdly the relationship between evaluations of the activities and the psychological impact. A shortened version of the POMS, which surveys tension, dysphonia, anger, vitality, fatigue,confusion, was used to assess the psychological impact. Furthermore, the activity evaluation was measured by enjoyment, sense of benefit, feeling of effectiveness,cooperation, and the volume of activities was measured by using a lifestyle recorder which measures exercise strength, number of steps. A total of 31 staff and 65 citizens were surveyed, and firstly, although the activities gave the citizens a psychological benefit, it showed a negative impact on the staff.Secondly, there was a correlation between the volume of activities by the staff and their psychological impact, showing tendencies toward increased depression, anger, confusion, fatigue, and decreased vitality. Thirdly, there was a correlation between the evaluations of activities and the psychological impact, with the staff tending to experience reduced tension and stress by thinking that they have made an impact, and the citizens tending to experience increased vitality and decreased fatigue due to enjoyment.
