The research aimed to identify: The effect of special repetitive speed training on the development of some physical abilities And strength, speed of the round house kick (Dulio chagi) for taekwondo players . The researchers used the experimental method for one experimental group reached (15) Player from the taekwondo team in the Employees club at Zagazig University. In the dental stage under 17 years old The researchers 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 special repetitive speed training is positively influences development of some physical abilities (special Agility , Power , The movement speed ) And strength, speed of the round house kick (Dulio chagi) for taekwondo players . The researchers recommends the importance of: - Use special repetitive speed training To development of some physical abilities, Aerobic abilities. - Use special repetitive speed training When planning special programs for development of some physical abilities, Aerobic abilities.