The radical scavenging activity of the extracts was investigated by means of the decolorizing of stable DPPH radical. The highest activity was obtained from acetone extract of 184.36 mg TEAC/g extract followed by the 95% ethanol and ethyl acetate extracts, respectively. The first and last extraction steps of hexane and water gave the lowest activity. Comparison of antioxidant capacity in the seed, flower and husk of areca nut showing the seed extract possessed the higher DPPH and hydroxyl radical scavenging activities and reducing power than other two extract [Zhang et al., 2009].