Sodium styrene sulfonate (SSS) modified hydrotalcite (NO3-HT) was obtained, and then the SBR/hydrotalcite com- posites were prepared. The structure and property of composites were characterized respectively by curometer, Universal Test- er and TGA. The results indicated that, in the system of the peroxide, the scorch time of SBR/HT composites shortened with the loading of HT, and ~M also shortened. And then, because of the hydrotalcite, the tensile strength and the elongation at break of materials increased firstly and then decreased, and the best was 3-5% content....