To realize a contents distribution system which efficiently respond to a contents demand with a large amount of temporal fluctuations and prevents the details of contents from being leaked before a day when a distribution ban is lifted.

This contents distribution system is provided with: a distribution server group 130 for distributing contents data for providing a user with contents through a communication line; and a push type distribution control part 120 for allowing the contents data distribution in response to a contents acquisition request from the user, notifying the user of a beginning day or time for allowing the distribution of restoration data for restoring the contents from the contents data and distributing the restoration data through the communication line after the start of the permission for distributing the restoration data.