Objective: The purpose of this study was to compare the effectiveness of music training and bilateral brain training with regard to reorganization of brain in reduction of dyscalculia symptoms in female students (aging 7-9). Method: An experimental pre-post test  design (tree groups), and a sample consisting of 20 dyscalculia students were selected randomly, and divided into three groups (music training group, bilateral brain training group and control group). A checklist for dyscalculia diagnosis (APA, 1994), Keymath Test, Wechsler Intelligence Test, Brain-Mapping were used to collect the data. Result: The findings of research show that music training and bilateral brain training could reduce dyscalculia symptoms and made bioelectric activities in brain (frontal, parietal…). Bilateral brain training reduced symptoms of dyscalculia in all of fields. Conclusion: Such bilateral brain training and music training could be used to reduce symptoms of dyscalculia disorder.