As the number of aged people and people with dementia has increased tremendously, to set up day care centers has been the top priority of public. Taiwan has set up a series of long-term care plans include Ten-Year Long-term Care Program1.0 and 2.0to take care those in need of since 2007. By 2016, there have been84 transferred from public spaces into day care centers which were community centers, schools, and markets et cetera originally. This study aimed to realize how to transfer vacant community centers into day care centers not only from legal level but also from practical status, then to establish a set of design principle for both government and private departments who has interest in. Based on the study, the results indicate the key points of establishing a day care center success-fully including: supports from central authority and local government, efficient negotiations between public departments, locals and education units’ attitude, concepts toward long-term care, outstanding crews and, the combination with local elements. The research also marshals the solutions interviewers have applied to, displays models of transition, and brings up suggestions for public faculties and those who intend to involve in.