In sport today one of most actual problems is children's early specialization. For example, in tennis specific training begins for children at 4 – 5 years old. In this age the child locomotors system is in active developing stage, movement and postural stereotypes are not persistent, this fact must be considered by the coaches. Aim of current research was to investigate locomotors system static’s condition of young tennis players. The tasks of the study: 1) to investigate young tennis players locomotors system static’s; 2) the experiment data of photogrammetry method – a commonly applied technique for assessing musculoskeletal system’s condition in physiotherapy to compare with the data from Simi Motion 3D video analysis system – an accepted modern research method in sport biomechanics.