This study was done to investigate the interaction effect of the mixture of each pair of traditional medicinal plants including: Sage (Salvia officinalis), Hawthorn (Crataegusoxyacantha), Walnut Leaf (Juglansregia L.), Red Cabbage (Brassica oleracea), and Yellow Sweet Clover (Melilotus officinalis) on the antioxidant activities and free radical scavenging by using DPPH (2, 2-diphenyl-1-picrylhydrazyl) assay at different temperatures. Results showed that free radical scavenging in the presence of Walnut Leaf mixed with four other plants and Hawthorn mixed with Sage and Red Cabbage increased with increasing temperature while, in the presence of other mixtures decreased with increasing temperature.