Studies are being conducted to model jumping motion mechanically. Conventional studies have been conducted using only Muscle Tendon Complex (MTC), which consists of muscle and tendon. In this study, in addition to MTC, modeling was carried out considering lower limbs including the foot, ankle joint and bone as one system. In the modeling of the system, the idea of bond graph using not only force but power was considered. So far, studies have generally been done on the idea of using the ankle as a pivot. In this study, this idea was changed to the idea with the toe as the pivot. In modeling, this idea of using bond graph was very effective. Based on this method, modeling study was carried out and the model could be constructed. It confirmed that the results were comparatively agreed with the experimental results, and this model was confirmed that the results could be reproduced.