Continuous and interval training is one of sport activities that has a positive effect on trainees in physical fitness performance as a result of this, it acquires a wide attention locally and globally, so it concerns with the variety of training method as a basic requirements for improvement of physical fitness. The objectives of the study were to determine the comparative effect of continuous and interval training on some selected physical fitness variables among u-17male football project players. To achieve the purpose, pure experimental design was used. 24 u 17male football project players were taken by comprehensive sampling technique as a sample study whose age was 14 – 17 years. Continuous and interval training group were assigned by random sampling method and performed continuous and interval training respectively three days per week for 3-month and 60second per session. Both groups undergone training program and had taken pre and post-tests. So, all subjects participated in 5 selected physical fitness performance tests: 12 minute run test, Illinoi agility test, 30 meter sprinting test, pull up test and sit and reach test. The data collected from the study subjects was analyzed using SPSS version 20 software by paired sample t-test, ANOVA, and independent sample t- test of significant at 0.05 level of confidence. Continuous training groups were significantly increased on cardiovascular endurance (MD=54.375), Strength (MD=4.875) , flexibility(MD=1.037), agility(MD=-2.000 ) and speed(MD=-0.832). Interval training groups were not significantly increased on dependent. So, the result of the study indicates that, continuous training groups were performed better than interval training group on the level of cardiovascular endurance, muscular strength, flexibility, agility, and speed. So I concluded that continuous training was as effective as interval trainings for enhancement of all the selected physical fitness in twelve weeks training programs. But additional longer-term study with follow-ups is required to confirm this.