Aim The intention of existing study was to compare the effects of varied aerobic exercise intensity on body composition of sedentary overweight females in arbaminch. Method Forty[40] overweight participants [body mass index (BMI) ≥ 25 kg/m2, age 18–32 years] were randomized into four equal groups (n = 10): light-intensity training group (LITG), 40–60% heart rate reserve (HRR); middle intensity training group (MITG), 60–70% HRR; high-intensity training group (HITG), 70–80% HRR; and control group (CG).Aerobic exercise training program was conducted for 40–60 min per day on a treadmill 3 days per week for 12 weeks. All participant height, weight, WHR, BMI and %of BF were measured at pre and after 12 weeks. Result At the starting point, the component of body composition indicates did not differ significantly among the four groups (p > 0.05). After 12- week exercise intervention, the HITG and MITG had significantly more changes in body weight, waist-to-hip ratio (WHR), %BF and BMI than the LITG. Conclusions A 12-week high and moderate intensity exercise intervention can considerably reduce body weight, body fat, WHR, and BMI, whereas a light-intensity exercise intervention can significantly reduce body weight and body fat. Based on my investigation all types of intensity can reduce body weight. But high and moderate intensity training had reduced weight quickly than low intensity training.