The research aimed to develop a training program using training 3/7 to develop some physical abilities and the digital level of discus throwing for secondary school students and to know its effect on: 1- The special physical capabilities (muscular ability of the arms - the muscular ability of the legs - the strength of the back muscles - the dynamic balance - the dynamic flexibility) of the secondary school students. 2- The numerical level of discus throwing among secondary school students. The researchers used the experimental method on a sample of (20) students at the Secondary Sports School in Zagazig, who were divided into two groups, one of which was an experimental group and the other a control group, each of which consisted of (10) students. Among the research tools: physical tests - measuring the digital level in discus throwing - the proposed training program. Statistical treatments: the arithmetic mean - the standard deviation - the median - the skewness coefficient - the simple correlation coefficient - the "T" test - the percentage improvement. Among the most important results: 1- The training program using 3/7 training has a positive effect on the special physical capabilities (muscular ability of the arms - muscular ability of the legs - strength of the back muscles - dynamic balance - dynamic flexibility) and the numerical level in discus throwing among secondary school students. Among the most important recommendations: 1- The use of 3/7 training led to the development of special physical abilities because of its effective impact in improving the numerical level in discus throwing among secondary school students. 2- Paying attention to stretching, flexibility and resistance exercises when applying the 3/7 training to avoid the mutual adverse effects of developing strength on flexibility.