To provide a prepaid meter reading system which can be used immediately when a user wants to use it and which can reflect the revision of the rate of gas or electricity at low costs and surely.

The prepaid meter reading system is provided with a meter reading meter 50, a communication terminal 11, an account system 20 and a center 30. The communication terminal 11, the account system 20 and the center 30 are connected to a network 40. The account system 20 is provided with an account Web 21 and a user account database(DB) 22. The center 30 is provided with a center communication part 31, a usable-amount conversion part 32, a user control part 33 and a meter reading meter control part 34.