Introduction: Mental retardation is a problem directly to decrease learning and ability to perform physical activity, and leads to the poor physical fitness and It is also stated in an article that Spark exercises have more effects on mental disorders and aim of this study was to compare the effect of eight weeks spark and central stability training on some of the indicators of female students with mental retardation in Bardaskan city. Materials and Methods: In this semi-experimental study, all educable mentally retarded students aged 8 to 12 years old was in Bardaskan city in year 2018. Sample was 30 persons of the population with IQ between 65 and 55 which are targeted and based on criteria were selected and randomly divided into three groups (10 persons in Spark training group, 10 persons in central stability training group and 10 persons in the control group) were studied. In order to assess the study variables in pre-test and post-test we used Stork balance test, dynamic balance Y test, Wells Flexibility test, test 9 x 4 meters for agility. Both groups spark training and central stability training participated for eight weeks. However, the control group did not have any specific and targeted training. After the completion of training courses and we have done pre-test and the data were analyzed by software spss version 21 at α : 0. 05 by the Kolmogorov-Smirnov test and dependent t-test and ANOVA. Results: Eight weeks of central stability exercises had a significant effect on all fitness indicators studied, such as static balance, dynamic balance, agility, flexibility effect (in all variables, P=0. 001) and Spark exercise had a significant effect on all index except for the flexibility (P=0. 093), Static balance (P=0. 001), dynamic balance (P=0. 031), agility (P=0. 001) Conclusion: According to the findings of this study, eight weeks of spark training and central stability have a positive and significant effect on all indicators of physical fitness except flexibility and the only difference between the effectiveness of these two exercises is the positive effect of central stability training on flexibility index.