Abstract: Information of the flow of contract information and the flow of payment is acquired from the worldwide-known trade finance EDI service in cooperation therewith. Information of the flow of distribution is acquired from the electronic clearance system. Matching processing is conducted for two kinds of information items from the trade finance EDI service and the customs according to common information contained in both information items such as a container number of a cargo liner or an item number of the cargo for improvement of job efficiency of each firm concerning the trade. The information items are resultantly unified by establishing a connection therebetween and is accumulated in a database in no special order. There is implemented a device to collect clearance information from a plurality of customs at the same time.