Because of the increased interest in health, medical care, and wellness, the utilization of health-related information resources, especially those found on the Internet, has been rapidly increasing. In addition, despite encountering an increasing number of health and medical-related reference questions in public libraries, public librarians feel limitations in their ability to perform these types of reference services. Therefore, this study proposed the cooperative network system model for vitalizing CHI Services, meaning that all the related agencies, including public libraries, medical libraries, medical institutions, and the health and medical community collaboratively provide consumer health information service. This study presented in detail the key elements of the cooperation model, the subject of cooperation, target sources for cooperation, the content of cooperation, operations of CHI-providing sites, operations and roles of Cooperation Centers, and directions for cooperating with commercial institutions.