This study was conducted to examine the experience of facilitators in self-help groups for the developmental disabilities by focusing on the relationship between the facilitator and support organizations, self-help groups, the developmental disabilities themselves, and the parents of the developmental disabilities. To achieve the purpose of this study, the data were collected through in-depth interviews with seven facilitators of self-help groups who were selected for the self-help group support project for the developmental disabilities conducted by A corporation in 2019. The Glaser’s(1998) constant comparison method, which allows the researcher to understand the phenomenon that they would like to study from the perspective of the participant, was utilized as the research methodology for this study. The results of the analysis derived 6 themes and 9 sub-themes in the 3 categories of ‘relationship with support organizations’, ‘relationship with self-help groups of developmental disabilities’ and ‘relationship with the parents of the developmental disabilities’. In addition to implications from the research results, this study provided practical suggestions to support developmental disabilities self-help group and facilitators.