Korea Knowledge Portal is the web site designed to promote the circulation of the digitalized national knowledge and information of various knowledge providers chosen for strategic database development and strengthen the related systems. This service is developed and being operated by Korea Agency for Digital Opportunity and Promotion, and the integrated the metadata of knowledge providers in each field are integrated and linked for the management of national knowledge and information resources and the extended strong one-stop integrated search system was developed to provide stable and active national information service. Korea Knowledge Portal gives the highest priority to maximizing the sharing and usage of national knowledge and information resources and providing easy and efficient user-oriented knowledge information service by developing more effective search and management basis for national knowledge and information resources and providing vast knowledge and information through the expansion of links to knowledge and information.