This study aimed to find out how certain physical fitness variables of Bahir Dar University's U- 17 female football project participants were affected by small sided game training. Aerobic fitness, speed, and agility were the factors examined. Several hypotheses were developed to aid in this investigation. An experimental research design was used in the study. The sample for the study consisted of 24 football project players from Bahir Dar University, aged (EG = 16.2± 0.658, CG = 16.2± 0.658). Through random selection and thorough sampling, the subjects were split into two equal groups. The experimental group (n = 12) and the control group (n = 12) both participated in a typical football practice. However, for an additional eight weeks, three times each week, for approximately thirty and forty minutes each, only EG took part in smallsided game training. First as a pre-test before the delivery of small-sided training, and then a post-test eight weeks after wards. Using the SPSS version 23 software, the information gathered from study participants through primary data sources was examined using a paired sample t test to compare within pretest and post test, between groups were used independent sample t test and to determine the effect sizes of the 0.05 level of significance, the effects of small sided training on physical fitness. The outcomes showed that small-sided game training significantly enhanced EG's speed, agility, and aerobic fitness (p< 0.05). This finding suggests that training in smallsided games for eight weeks increases several aspects of physical fitness. In order to improve football players' physical condition, coaches and players are suggested to use this type of