The purpose of this study was to find out the kinematical analysis of arm\'s basic position in ballet. In order to achieve the purpose of the study, 3D cinematographic analysis was conducted with 4 elementary students ballerina who might performed the perfect arm\'s basic position. According to the results of this study, it was appeared that the shoulder kept about 79%-82%, the elbow kept about 62%-92%, the wrist kept 50%-107%, and finger kept 46%-111% with the height. Also, movement was formed with 113˚-164˚ of the elbow, 136˚-148˚ of the wrist, and 21˚-71˚ of the shoulder. The angle of arm gradient was remained -73˚ in the first position, -28˚ in the second position, 70˚ in the third position, and -15˚ in the forth position. The left-right ratio of the total arm angle was 91% in the first, 98 in the second, 101 in the third, and 96% in the forth position. Based on the results mentioned above, balance and symmetry of both arms was an important factor in those four positions. Although it is impossible to maintain the position like robot, it may be a good performance if a certain level of extent was remained. With respect to this point of view, it may be a good position if the difference between right and left arm in each joint can be remained within 2%. Angle also was an important factor that if the difference in total angle can be remained within 2% it may be an excellent position, there was difference of right and left based on the joint though. Therefore, practice and instruction to make a perfect symmetry as much as possible were needed. In turn, because ballet is movement with expression of the body, beauty of the body and balance of the movement have to be harmonized for beautiful performance. Therefore, it would be a meaningful future study considering the body condition and movement of ballerina to define the beauty. ※ Key Words : ballet, basic arm position, kinematical characteristics