Rice is the most important cereal in the nutrition and calories receiving of human. The rice is the main food of the Thai people. By each type of rice is useful and it has different properties. Objective : this study was to the ability radiation protection and antioxidants capacities in Homnil Rice, Riceberry and Muser Purple Rice, which contain anthocyanin and polyphenolic in high quantity. Methods: study effect of extract from three rice type in in vitro studies of antioxidative effect of three fractions were investigated using DPPH, ABTS and FRAP assay and study of radioprotective effect from rice extracted was using micronucleus assay. Results and conclusion :Muser Purple Rice has the highest antioxidants capacities of extract from three rice type. DPPH assay,EC50 was 90 µg/ml, ABTS assay was 916.13µg/ml and FRAP assay was 1862 µg/ml. Result of Radioprotective effect by micronucleus assay . It was found that Muser Purple Rice are reduce Micronucleus about 40% and 60% at concentration of 50 and 100 µg/ml, respectively. Therefore, Muser Purple Rice is suitable for radioprotective agent.