This study aims to examine similarities and differences of each e-B/L types as well as identify problems of e-B/L utilization and directions for improvement. Especially, it suggests strategies for the realization of e-B/L through reviewing and analyzing commercial types of e-B/L, which have been developed so far. Although e-B/L succeeded in realizing the function as a certificate of title and its distribution value, it has not been fully implemented due to operational problems. Subsequently, e-B/L was realized in the Bolero project as an attempt of system to make up for shortcomings in the failure of previous e-B/L types, but it has still a number of problems. To solve this problem and make use of e-B/L more efficiently, this study focuses on the specific ways to introduce e-B/L and suggest directions for the development of e-Nego system. Preparation of electronic documents is a prerequisite for the development of the e-Nego system, taking distribution of electronic documents into consideration. Next, compatibility of electronic documentation and paper-based documents should be realized, with the guarantee of authenticity of electronic documents.