This paper presents a method for the interconnection of heterogeneous knowledge bases on a knowledge grid for knowledge sharing and provision. Various knowledge bases have been created by using collaborative editing environments such as Wiki in each field. Each knowledge base exists independently. On the other hand, an event affects various aspects of an area, field or community. Therefore, in today's global environment, it is important to transmit significant knowledge related to accidental or irregular events to actual users from various knowledge bases. In this paper, we propose a method for the extraction of related items across heterogeneous fields by interconnecting each knowledge base arranged on a knowledge grid.