Abstract The scientific development taking place in the field of sports, imposing new horizons limitless, in the sports science, including the science of sports training, which has developed rapidly, and his theories have taken a new curve to keep up with the modern trends in sports training, Weightlifting training is one of the methods used in the training of many sports, and the training of strength using weights has become the first step towards the exercise of any sport and has proven that weight training is one of the most important factors that contribute to improving the level of performance and the development of fitness as it is not limited to the development of strength Muscular) maximumstrength, strength, and strength(it extends to include the positive effect of the efficiency of the heart work (Juma, 2002, 198), and "the use of a sport, activity or training technicality other than the activity or the main sport,or theuse of other sports activities for the purpose of maintaining physical abilities. (MohammedJaber Berriq and Ihab Fawzi Al Badiwi, 2010, 6) And Delorme system is one of the training systems for weightlifting training, which is used to develop the muscular strength of tennis players and the territories is one of the events that need to make a high effort during the performance of the basic skills of offensive tennis (dispatch of tennis) because it is considered a break in getting a point in getting a point in winning the match or the skill h1 skill needs strength, the problem of research isnot giving the necessary skills of the period of strength for the period The use of weights, which leads to a decline in the level of physical abilities and skills,so the researchers worked based on the above participation through their research by giving some scientific solutions to address the problem through the use of delorme system exercises during the period of special preparation to maintain the level of performance of physical abilities and skills in tennis players, and the importance of the research in conducting a study to find out the effect of the use of the system delorm on the face of muscle strength and some kinmatic variables of the skill of the transmitter with tennis to try to get the best results and the highest achievement in order to achieve victory In the game.