Abstract: Self-crosslinking Polyacrylate resin -b-Poly (Glycidyl Methacrylate) Copolymer was prepared by the emulsifier-free copolymerization with acrylic acid(AA)/acryl amide(AM)/vinyl cyanide (AN) / methacryloxyethyl trimethylammonium chloride(DMC) as the main materials, using GMA as crosslinking agent，polyvinyl alcohol (PVA) as dispersing agent. The particle structure and the physical properties of the copolymer were investigated by TEM、FT-IR、XRD and DSC. The microstructure of surface and cross section of paper were observed by SEM. The experimental results show that the self-crosslinking Polyacrylate resin -b-Poly (Glycidyl Methacrylate) Copolymer emulsion thus obtained is quite stable; the copolymer is amorphous polymer, and the strength of the crosslinking copolymer is highly increaseced after cross lined by GMA; When w (GMA) =0.7%, w (PVA) =0.4%, the ring crush index, bursting strength and tensile index can reached to 16.64N.m/g、440KPa、33.54N.m/g , improved by about30%.