To provide a game machine inspection system capable of inspecting the fraudulent exchange of the control component of a game machine in simple constitution while keeping high security.

When the time preset in an inspection time setting table comes, a random number generated by a random number generation routine is stored as the optional information of this time in an optional information table on a hard disk drive 110d. A hall management computer 110 acquires security information from respective radio IC tags 88 through a reader-writer 120, collates the security information with the optional information of the previous time stored in the optional information table, judges whether or not the security information and the optional information of the previous time match and thus inspects whether or not a ROM 83 is fraudulently exchanged. Further, the reader-writer 120 writes the optional information of this time stored in the optional information table to the respective radio IC tags 88 as new security information.