The research aimed to identify: The effect of the French Contrast Method on developing power endurance and some physical abilities and the effectiveness of offensive performances to kyroge players in taekwondo . The researcher used the experimental method for one experimental group reached (10) Player from the taekwondo team in the Employees club at Zagazig University. In the dental stage under 17 years old The researcher used the following statistical treatments: the mean - the standard deviation - the median - the torsion coefficient - the "T" test - the correlation coefficient - the equation of improvement rates. Among the most important findings and conclusions: The use of the French Contrast Method is positively influences development of power endurance and low indicator and some physical abilities ( maximal muscle strength, Anaerobic capacity, power) and the effectiveness of offensive performances to kyroge players in taekwondo. The researcher recommends the importance of: - Use the French Contrast Method To development of power endurance and low indicator and some physical abilities and the effectiveness of offensive performances on the different age stages of taekwondo players during the different season periods. - Directing the results of this study to taekwondo coaches for the possibility of benefiting from its results