Introduction: Exercising with herbal supplements is recommended as an important way to control and prevent obesity. The aim of the study was to evaluate 8 weeks moderate intensity rhythmic aerobic exercise with green tea supplementation on some of metabolic and body composition indices of obese women. Methods: In the semi-experimental study, 30 inactive obese women, purposefully, based on body mass index (BMI) were randomly divided into 3 groups of 10 people. They were rhythmic aerobic exercise with green tea supplement group (Experimental1, BMI: 35. 69±, 2. 28 kg/m2 ), rhythmic aerobic exercise group (Experimental2, BMI: 36. 18±, 2. 25 kg/m 2 ) and control group (BMI: 34. 65±, 3. 02 kg/m 2 ). The rhythmic aerobic exercise protocol was performed 8 weeks and 3 sessions per week for both experimental groups. The supplement group received one capsule containing 500 mg of green tea daily. Metabolic and body composition indices were measured in pre-test and post-test stages. Paired t-tests, covariance analysis and bonferroni post hoc test were used for data analysis (p<0. 05). Results: Eight weeks of rhythmic aerobic exercise with and without green tea supplement led to significant decrease (p<0. 05) in body weight and BMI (both of them respectivly 3%, 2%), waist circumference(respectivly 4%, 1%), serum glucose(respectively 7%, 5%), triglyceride (respectively 11%, 4%) and malondialdehyde (MDA) (respectivly 25%, 9%). Conclusion: However, rhythmic aerobic exercise improved body composition and serum levels of triglycerides, glucose and MDA in obese women,rhythmic aerobic exercise with green tea supplement had a more significant effect on the waist circumference, serum levels of triglyceride and MDA.