Honey-Bee proplise was obtained form the Agricultural Faculty farm at Fayom-Egypt, as a natural product, it was extracted by Ethyl alcohol (96%). Crude proposlise and propolise ethanol extract at levels of 100, 200, 300 ppm were tested as a natural antioxidant for sunflower oil compared to the synthetic antioxidant, butylated hydroxy toluene (BHT). The oven stability test of sunflower oil showed that propolise as a natural antioxidant product prevented rancidity of sunflower oil for an estimated period of six months at level 0.02 gm/100 ml (200 ppm) compared to Butylated hydroxy toluene at 0.03 gm/100 ml (300 ppm) level.