PURPOSE : A system for executing for an investment using points and a method thereof are provided to maximize a benefit of points by making a service subscriber participate in an investment using one' s collected points directly, supplying an investment experience for the service subscriber, and returning investment earnings being generated by the investment to the service subscriber.CONSTITUTION : A service supplying device(10) for controlling a service generally is connected to a plurality of subscriber terminals(20), that is, a personal computer and a member company(30) through a predetermined communication network such as the Internet. The member company(30) is connected to a plurality of affiliated member companies such as an oil station, a food service company, and a distribution/shopping company. The member company(30) issues a membership card to a service subscriber in a member joining process and endows service points to the subscriber with respect to a consumption of the subscriber in the member company(30). The member company(30) pays a point amount of money corresponded to the service points in a transaction bankbook of the service supplying device(10). The service supplying device(10) performs an investment such as an investment in stocks, an investment for an inauguration of an enterprise, a real estate, etc. using a point amount of money, and distributes reverse points corresponded to investment earnings thereof to a corresponding service subscriber. The service supplying device(10) is cooperated with a predetermined investment company(40) which executes an investment process.? KIPO 2003