To provide a game parlor management device capable of favorably identifying a scale of players visiting a game parlor in a group.

A game parlor management device determines whether or not a player subject to an issuance of an own ball ticket matches a player using the own ball ticket by face recognition using a face-recognition camera 20 provided in a counting machine 2 of each game machine and, when they do not matches, determines that the player belongs to a group. This configuration can identify the number of players who share putout balls and identify a scale of the players who visit the game parlor in the group. Consequently, when there are players who visit the game parlor in an extremely large-scale group, the game parlor can take an appropriate measures such as admitting a relatively small group to share putout balls, but restricting the sharing of the putout balls among the large scale-group.