To provide a game control board and its inspecting method capable of suitably and efficiently carrying out the inspection of a game machine with reliability without restricting the freedom of design of the game control device due to the circumferences of the inspection method.

An inspection connector 210 by which the signal directly output from a CPU 220 and the signal directly input into the CPU 220 can be taken out through the signal lines connected to a bus 260, and the detection signal directly output from a starting prize port switch 131 and a various-prize port switch 132, and the signals directly input into a figure display control part 150, a display lamp control part 152, an effective sound control part 154, a prize ball discharge control part 156, and an external terminal 158 can be taken out is provided to a main board 200.