The aim of this study was to investigate the importance of community services necessary for deinstitutionalization of people with disabilities as perceived by parents of children with disabilities residing in Gyeongsangbuk-do region and identify the community services that influence their intention to institutionalize their children with disabilities so as to determine the variables that influence deinstitutionalization of people with disabilities. To this end, a survey was conducted with 294 parents raising children with disabilities living in Gyeongsangbuk-do region, using a questionnaire consisting of items intended for understanding the importance of possible community services for deinstitutionalization of people with disabilities. Then, logistic regression analysis was performed taking into account the parents’ perceived importance of community services as the independent variables and their institutionalization intention as the dependent variable. The results of this study are as follows: First, among community services necessary for deinstitutionalization, it was found that parents’ perceived importance was high for services such as ‘lifelong education support’, ‘client-tailored housing support including house remodeling and installation of convenience facilities’, ‘daytime personal assistance service program,’ and ‘medical emergency response support’. Second, as a result of performing a logistic regression analysis to determine how parents’ perceived importance of community services needed for deinstitutionalization influence their intention to institutionalize their children with disabilities, it was found that ‘job support’ and ‘independent living support’ services significantly influence their intention to institutionalize their children with disabilities. Based on these findings, this study suggested policy measures to promote deinstitutionalization of people with disabilities taking into account factors influencing deinstitutionalization of people with disabilities.