A structure of a pull adjustable catch for a drawer slide including an adjustable catch outfitted at the front end of the slide track and a turning knob in which the adjustable catch swings when the slide track is being pulled outwardly from the drawer. The adjustable catch has the curved flange and a retaining stud mounted on center of one side. A terminal end of the adjustable catch has a retaining spring to be caught between two stops fo the bumper mounted at the front end of the slide track. The turning knob provides a guide groove for the retaining stud to move along at a curved angle. While the operator turns the turning knob, the guide groove leads the displacement of the retaining stud, limiting the retaining spring moving between two stops of the bumper.