Purpose: This research was carried out to present an ideal cooperative model between the public and private health sectors for the management of community dementia patients. Method: In this study a public-private cooperative council was formed, basic data for dementia patients and their families were collected, and a dementia service program was carried out in cooperation between the two sectors. Results: The survey data shows the majority of the registered patients were undergoing a chronic diseases which would make the dementia health service inefficient. The cooperative public-private council adopted the reinforcement of medical service to the public enrolled dementia patients. The intensive medical service program showed effects on the health status of the dementia patients. Conclusion: The results of this study pointed out that change of the health insurance program supportive to the private sectors to be made; a referral system for the public health sector to the private sector should be established; and expanding the capacity of the visiting health program in the public health sector is needed.