Recently, it has been recognized that not only children with developmental disabilities but also their families have needs for special support. The purpose of this study was to examine the importance and problem of a group therapy for parents in "Mokurnoku-guroup". Almost all subjects have a positive impression on a group for parents. It is suggested that Parents at a group get information and feel relieved each other. And It is suggested that parents having negative impression on a group don't recognize importance of "Mokurnoku-group". It is important that parents and therapist share the purpose of "Mokurnoku- guroup".