To automatically determine operation start as business without inputting and setting the start of the business when the business start time can not be predicted because of the work of the inspection and trial hitting, etc., of game stands accompanying the new replacement and rearrangement of the game stands, and to divide and store data for the business and data for the trial hitting.

The game hall management system 30 for gathering and managing game data generated in relation to the operation of a game machine installed in a game hall includes a management device 10 functioning as: a determination means for determining whether the game machine is operated as the business or is operated as the trial hitting on the basis of lending signals outputted from an inter-stand machine; and a storage means for storing the game data as the data for the business when determining that it is operated as the business.