Redispersible latex powder is made of polymer emulsion by spray drying, mixed with the water in the mortar, meet water emulsification and dispersion, re form stable polymer emulsion, it in the water after emulsification and dispersion, water evaporation, in the mortar to form a polymer film.However, in the self-leveling to have good fluidity and self-smoothing performance, but also to have a certain carrying capacity to meet other performance requirements, such as construction requirements, and the old base bonding force requirements.To meet these performance requirements of self-leveling, the addition of redispersible latex powder plays a crucial role in improving the flow performance of self-leveling mortar system, improving the wear resistance and cohesion of self-leveling, and reducing shrinkage.