The purpose of this paper is to study the current situations of trade financial EDI based on The BOLERO system, New BOLERO system, The NACCS system in Japan and The EDEN(Electronic DElivery Negotiable document) system and problems in application of marine insurance contracts. Entwined with the contracts of carriage in international sale transactions is a contract of marine insurance by which the goods are insured against maritime perils. In the thesis I tried to explain the problems of paperless marine insurance contracts based on problems in relating to formation of the transit insurance contract and replication the functions of the marine insurance policy electronically.