Due to large numbers of hydroxy group on the surface of raw nanosilica [14, 15], its surface is easily compatible with polar polymers, such as PVA and PVC compared to the apolar matrix, natural rubber. According to traditional method, the most commonly used method to disperse nanosilica was the mixing process conducted in two-roll mill [16, 17]. Despite well-distributed polymer composite can be finally obtained, the contamination of fly ash and the side effect on the lung of individuals are difficult to be avoided during the preparation of composite in either the laboratory or factory. Also, this method possesses some other advantages, such as low energy cost and homogeneous dispersion of silica in NR matrix. Latex compounding, therefore, can reduce harmful situation mentioned above, and be more eco-friendly and low-polluted processing. However, in order to obtain homogeneous dispersion of polar nanosilica in apolar natural rubber latex, surface modification of nanoparticles is required.