To provide a membership lot betting system capable of possibly checking the entry of the person who is not qualified in a lot having an age limitation in entry qualification.

A lot betting terminal 2 and a host computer in a lot administration control center 14 are connected by a communication line. In this host computer, a member database is built which manages information with regard to a member who has received a registration procedure beforehand. The lot betting terminal 2 accepts a betting description from the member, and also acquires a member ID from the data recording part of a member card which is owned by the member, and transmits these to the center 14. The host computer checks whether the member ID is registered in the member database, and when registered, instructs the terminal 2 about the effect, and also registers the betting description from the terminal 2 into the betting database.