The purpose of this study is to create and evaluate a program to enhance the mutual-assistance capability of community members to safeguard their health during time spent in evacuation shelters after a disaster. In previous research, “Supporting people in need of assistance after a disaster, ” the participants’ awareness of the need for mutual assistance was low and their relevant knowledge and skills were insufficient. Accordingly, this became a priority in the developed program. Twenty-eight people at six different facilities participated in the program. We collected data using a questionnaire survey and group interview with the participants. After conducting the program, the participants’ mean scores of mutual-assistance capability were higher than the mean pre-study scores for 25 out of 26 items. The results of group interview implied that the participants acquired [Realization of issues], and not only shared a [Sense of crisis among participants] but also felt a [Sense of responsibility for mutual assistance in the community]. We considered that our mutual-assistance training program at the time of a disaster is effective for developing mutual assistance for safeguarding health where local residents are unprepared to support those in evacuation shelters requiring assistance after a disaster. J. Med. Invest. 61: 94-102, February, 2014