Rediapersible polymer powder is a polymer used in modification of cement and mortars, it is the powder adhesives made by special through correct spray drying, it can disperse into emulsion quickly in water, and can increase the adhesion, abrasion resistance, flexibility between mortars and substrates, it is suitable for grouts, flexible putty, skim coat, tile adhesives, waterproofing mortars and repairing materials and so on.