An operating apparatus for game machine includes a depressing member, and a main body of the depressing member is provided with three engaging protrusions and two depressing protrusions that downwardly protrude. For example, the two depressing protrusions are provided between the three engaging protrusions. In response to a beating operation by a player, the right side of the depressing member is depressed, and then, an engaging portion of the engaging protrusion at the left side is engaged with a rear surface of an upper surface panel. Accordingly, the depressing member is sure to be depressed at the right side without being upwardly actuated, and a rubber switch depressed by the depressing protrusion is brought into contact with a board. At this time, a contact provided on the board and a contact provided on the rubber switch are brought into contact with each other, and an operation signal according to the beating operation is output to the game machine.