Abstract: A putting practice device includes first and second members and maintaining, indicating and positioning portions. The first member includes a sliding surface against which a putter blade is slidable according to a vertical pendulum movement. The maintaining portion maintains the sliding surface on a rolling surface for a golf ball, and maintains the sliding surface perpendicular to the rolling surface and parallel to a putting line for the golf ball toward a target. The second member including includes a portion defining a sight including a reflecting surface surrounding the said sight, the reflecting surface being provided on a top portion of the second member. The indicating portion allows indicating the a center of said sight. The positioning portion is for positioning the sight above the putting line and the golf ball.