This study was to evaluate the effect of yoga on Students' exam anxiety girls in Isfahan in 2017 was conducted experimental research with pretest and posttest control group and with a 28 examples of 130 community students 16 to 18 years old one cluster was selected randomly. Test anxiety Hamilton (1968) in both experimental and control groups was conducted before the implementation of the training, the experimental group trained for 16 one-hour sessions in Sports Yoga and mental imagery, but this tutorial for the controls were not implemented. After completing the training of both groups post-test were analyzed by paired t-test. The results showed that teaching yoga at the 95% confidence level, has a significant impact on exam anxiety, exam anxiety is that yoga reduces.