Sports technique is very different from discipline to discipline and its acquisition is based on a series of physical, mechanical and biomechanical laws that ultimately condition the achievement of sporting performances. Biomechanics is an important science that allows in the fighting sports to establish a specific technique by analyzing the forces involved, the lever system used, in the positions of attack, defence and counterattack techniques. In addition, the forces acting on the body are conditioned by the condition of the bone, joint and muscular system, the position of the centre of body weight, the weight of the athletes, the acceleration, and the level of their motor skills, strength, strength, speed, skill and mobility. Practically, the correct use of biomechanics can become an important point of support in understanding technical training, which can lead to performance. The biomechanical characteristics of the movement must always be linked to the tactical intention of the fighter. The coach should offer the fighters the opportunity to experience how the technique will be applied in the most effective way in the combat situation. Conclusion. There is a close link between the two areas, mechanical and biomechanical, but also interdependence between them in the field of physical education and sport. Thus, knowledge of biomechanical problems allows coaches and specialists in the field to act on: - the correct understanding of sporting techniques and the realization of programs that have the purpose of acquiring an efficient and varied technique; - improving the primary selection criteria for performance sports; - avoiding and preventing accidents in sport performance.