A golf putt training device which is characterized as follows. A light apparatus adapted to project an alignment segment and an aiming spot on a playing surface. Whereby the light apparatus is positioned behind a ball and the aiming spot is projected in front of the ball. The alignment segment is projected over the ball and a putter head. The alignment segment is used to align the putter head during a swing. The method for putt training can begin by projecting an alignment segment and an aiming spot from a light apparatus positioned above a playing surface onto a playing surface. A ball is positioned on a portion of the alignment segment on the playing surface. A putter head of a putter is placed behind the ball on a portion of the alignment segment. The putter head is aligned with the alignment segment. The putter head is moved to strike the ball using the alignment segment to maintain the alignment of the putter head with the alignment segment. In an option the light apparatus is comprised of a first light source and a second light source The first light source projects the alignment segment and the second light source projects the aiming spot. The alignment line and the aiming spot are about in a vertical plane.