This study focuses on ＂constructing of competency model and evaluating on relative weight for care workers in institution＂ to development a modular and systematic indicators and its implication to the talents cultivation of long-term care service. A team of Delphi technique and relative weight analysis were used to construct the competency model for care workers in institution. The findings of the research present that the context of competency model for care workers in institution in Taiwan is concluded in 6 competency clusters including physical therapy, life consideration, emergency management, activity engagement, psychological support and occupational ethics, and 21 competency factors and 74 competency indicators. The weight system of competency model for care workers in institution in Taiwan shows that: ＂emergency management＂ taking first hierarchy as the prioritized weight sequence of the main aspect, and ＂contingency measures＂ taking second hierarchy as the prioritized weight sequence. The findings of research not only a complete framework to develop the effective long-term care policy, but also use to assess the ability and provide the implications for personnel training of long-term care.