The purpose of this study was to compare the barbell kinematic difference of successful and unsuccessful lifts during the snatch and to understand make lifts failure factors. Two digital cameras were used to records the snatch lifts of 8 male University weightlifters and used the motion analysis system to obtain 3-dimensional barbell kinematic parameters. The results indicate that vertical velocity at the end of 1st pull, barbell maximum vertical height, and normalized barbell maximum vertical height were significantly different in successful and unsuccessful lifts (p < .05). The cause at lifts failure of factor were that slow of barbell vertical velocity at the end of 1st pull, lower of barbell maximum height, and smaller of normalized barbell maximum height.