As commercialization of the Internet has brought flood of information and the proportion of electronic source in the library collection has been gradually increasing, it is highly important for the library to quickly obtain and utilize the latest information. SDI service is expected to fulfill the needs providing the latest information swiftly and accurately to the digital library users. This study seeks to analyze the current standing of practical application of the SDI service in the universities of South Korea based on surveys and make a proposal on the advancement and extension of the SDI service.