Here are the results of the comparative biomechanical analysis of the Taekwondo in Dollyochagi motion during the Badachagi. 1. There were significant differences between the elite and non-elite group at the event 1 and 2 for the hip angle of the Taekwondo in Dollyochagi motion during the Badachagi. 2. There were no significant differences between the elite and non-elite group at all the events for the knee angle of the Taekwondo in Dollyochagi motion during the Badachagi. 3. There were no significant differences between the elite and non-elite group at all the events for the ankle angle of the Taekwondo in Dollyochagi motion during the Badachagi. 4. There were significant differences between the elite and non-elite group at the event 3 for the trunk flexion/extension angle of the Taekwondo in Dollyochagi motion during the Badachagi. 5. There were significant differences between the elite and non-elite group for the maximum vertical ground force reaction of the right foot for the Taekwondo in Dollyochagi motion during the Badachagi. 6. There were no significant differences between the elite and non-elite group for the maximum vertical ground force reaction of the left foot for the Taekwondo in Dollyochagi motion during the Badachagi. In conclusion to the results above for an effective motion of a Taekwondo Taekwondo in Dollyochagi motion during the Badachagi from the event 1 to 2 the hip angle the extension is very important, for the knee angle of the kicking leg after the internal rotation of 90, then it needs to be extended from a position of flexion of 170 at the impact. As for the ankle angle from event 1 to 4 it has to be in maximum plantar flexion, and at the impact it needs to be internally rotated 140, while for the stability of trunk extension angle at event 3 the erector spinae muscles must be strengthened through training and the kicking foot must be able to create a high vertical ground reaction force.