To enable improved practice corresponding to undulation of the lie in an actual golf course.

A base board 11 with an artificial turf mat laid to place a golf ball 4 on is supported, as is a base board 12 with a rubber mat 2 laid for a practicing person to stand on, each by five posts 14 (141-145, 146-1410) at the bottom center and near the four corners. The posts 14 are each formed vertically movably by an actuator 15 consisting of a hydraulic cylinder or a servo motor, etc., which is driven and controlled independently. The base boards 11, 12 can be set each in the inclined direction and at the inclined angle simulating course undulations such as uphill or downhill or a player's addressing stance with the toes up or down by selectively driving each actuator 15 with a switch.