Abstract: An apparatus for modifying the attitude of a golf ball having burrs formed thereon, the apparatus having a second station in which a CCD camera takes image data of the golf ball while rotating, one time, the golf ball around the X-axis by a step motor, and the rotational angle around the X-axis and that around the Z-axis, with which the equator having burrs formed thereon are required to be horizontal, are calculated in accordance with the image data; fourth and fifth stations in which step motors rotate the golf ball around the X-axis and Z-axis by the foregoing angles to-modify the attitude of the golf ball; and a sixth station in which a CCD camera takes image data of the golf ball to finely modify the attitude of the golf ball by step motors.