Abstract '' Contribution rates biomechanical indicators to skill the clean and jerk moment jerk in weight lifting sport ''. Ibrahim Abd El Rahman Ibrahim Sayed Ahmed The research aims to identify the contribution of biomechanical indicators to skill the clean and jerk moment jerk in weight lifting ، The researcher used the descriptive method as it the nature of the study. consisted in the number "2" the international players, The researcher used the following statistical treatments, the arithmetic mean, standard deviation, correlation coefficient and multiple regression analysis, The most important results It has been identified as the most important biomechanical indicators to skill the clean and jerk moments during the performance and private moment jerk, Recognize the contribution of indicators biomechanical ratios in the digital level, and the development of predictive equations digital level, The researcher recommended the use of linear and angular kinematic indicators as a basis for developing training and educational programs that benefit in developing the skill of the clean and jerk And to be guided by the proportions of the kinematic indicators of the skill when developing objective and quantitative tests to evaluate the performance of the skill. Lecturer, Department Of Theories and Applications Competitions and individual Sports Faculty of Physical Education Men Zagazig University.