To provide a point registration system introducible at a low cost and easily put into widespread use.

In this point registration system registering and managing a point issued according to a used value of a customer via the Internet, usage information including the used value in supply of a commodity/service to the customer is transmitted from first information terminal devices 11-15 to an information processing device 1 via the Internet 10, customer usage information including the point amount calculated on the basis of the usage information is stored by means of the information processing device, and the customer can receive the point usage information including the registered point amount from the information processing device via the Internet by mean of second information terminal devices 21-26.