Abstract: A novel siloxane fluorinated polyacrylate emulsion (FLHDV) was prepared by copolymerization of dodecafluoroheptyl methacrylate (RfAA), lauryl methacrylate (LMA), 2-hydroxypropyl acrylate (HPA), dimethylaminoethyl methacrylate (DM) and vinyltrioxethylsiloxane (VTES) with the (NH4)2S2O8 as a water soluble initiator and cationic/nonionic surfactants as mixed emulsifier. Chemical structure of FLHDV was characterized by infrared spectrum (IR) and 1H nuclear magnetic resonance (1H NMR). The particle sizes and the latex distribution of the emulsion were investigated by TEM, ζ voltage analysis and other instruments. The performance of polyester fabric treated by FLHDV emulsion was also studied in the research. The experiment results show that the FLHDV emulsion carried positive charges with a mean ζ voltage of +47.64 mV and with an average particle size of 116.2nm. The smooth film of FLHDV can be formed on polyester fabric surfaces and conferred the treated polyester fabric with an excellent water- and oil-repellency. As a result, the water--repellency and oil-repellency of the treated polyester fabric respectively reached 100 and 5 degree, and the water static contact angle on the treated fabric surface also reached 142.5º.