To sufficiently utilize the distribution of digitized contents.

A contents management server 3 capable of distributing contents and contents vending machines 6, 6-1 to 6-n for providing one or more previously distributed selling contents are connected to a communication network. When a portable terminal 7 connected to a contents selling machine 6 transmits a certification code and receives certification, a user of the portable terminal 7 is allowed to specify required contents from one or more selling contents and the terminal 7 transmits the specification of the required contents and the certification code to the contents selling machine 6. The contents selling machine 6 transmits the specified contents to the terminal 7, transmits the received certification code to the server 3. The server 3 charges the user of the received certification code for the specified contents.