Abstract: By means of mathematical statistics, literature reviews, experiments and statistical analysis, the mechanical characteristics in the take-off technology of both men's triple jump and long jump were subjected to a contrastive analysis. The biomechanical characteristics of the two differ chiefly: in the sprint stage, a long jump athlete receives a stronger impact than a triple jumper in the period through the board-landing instant to the dipping instant of knees; in the reflective stretching stage, the peak value of long jumper's reflective stretching force is bigger, so the long jumper's take-off angle is bigger. In terms of kinetic parameters, all a best long jumper does is to give an all-out “jump” while the best triple jumper focuses most on a rapid take-off