A golf putting and short-swing training device includes an upright support, an extension rod vertically adjustably mounted in the top side of the upright support, a track located on the top side of the extension rod in a laterally tilted manner and having an arched sliding groove rail, a slide coupled to the track and movable along the arched sliding groove, and a supplementary bar fastened to the slide for holding by a player with a golf club to practice putting or short-swing techniques accurately.