The efficient perfluorinated alkyl polyacrylate emulsion (FPE) was synthesized by Tetrahydroperfluorodecylacrylate(FM), Butyl Acrylate(BA), Methyl Methacrylate(MMA)and N, N-Dimethylethanolamine Methacrylate (DM), under the compound emulsifier of octadecyl trimethyl ammonium chloride(1831)and fluorinated emulsifier(FS).This reaction was initiated by potassium persulfate(KPS). The chemical structure and thermostability of emulsion were characterized respectively by IR and Thermogravimetry(TG). The results showed that FM was grafted to the polymer successfully and the decomposition temperature reached to 351.5℃ with the increase of fluorine content. The static water contact angle and atomic force microscope (AFM) were used to test waterproof performance of emulsion. The results showed that when the fluorine content reached to 12%, static water angle would reach to 127°. Particle size analyzer and transmission electron microscope(TEM) were used to detect the microstructure of emulsion. The results show that latex particles are spherical with average size of 220nm and monodisperse.