To provide a laser sight which emits a laser beam with an easily adjustable focusing mechanism to a golf ball from the side of a head to check the deviations in the movement of the head, which is the axis of swings, for golf practice at swings and putters.

A player can effectively and concentratedly practise swings for batter skills in a short time with an attached laser sight 3, which is adjustable in angle and detachable, to a sunhat 2 by easily aiming at a golf ball with a laser beam and watching the point on the ball the laser beam makes and checking the deviations in the movement of a head, which is the axis of swings.