Purpose: this study was to investigate the kinematic and kinetic difference of lower-extremity during two jumps with two kinds of shoes by biomechanical approach. One senior Taipei capital Ballet dancer dressed in her personal flat and pointe shoes was asked jump and Entrechat movements. Method: The hip, knee, ankle joint motion of dominant leg was captured by using three-dimensional motion analysis system and force platform system and vertical force was acquired by AMTI force platform. Result: The results were showed the maximal take-off force among two jumps and two varied shoes is about 2.28-3.57 times of body weight. The peak ankle joint acceleration of take-off or loading during jump was about 90,832 ~ 91,919 ° / sec 2 and 72094 ~ 76613 ° / sec 2, and the peak knee acceleration ranged in 53802 ~ 61520 ° / sec 2 and 36852 ~ 47033 ° / sec2. The conclusion is the loading performance is a little difference between two jumps with less effect from two kinds of shoes. Future study will conduct the difference of ballet basic movement pattern between flat and pointe shoes with large subject samples for improvement of ballet performance and prevention from lower extremity injury.