Fluorinated polyacrylate emulsion was synthesized via miniemulsion polymerization based on N-(perfluoro-octyl acetate, ethyl)-N-(ethanol acrylate) dimethyl ammonium bromide (PF8DM) as polymerizable cationic surfactant. The effect of the PF8DM content on the conversion rate of monomer and coagulum content was investigated; the impact of the PF8DM content on the emulsion stability and the film surface properties was studied. A comparative study of the surface properties of latex films prepared respectively by PF8DM and cetyltrimethylammonium bromideas as emulsifier was carried out. The results show that the monomer conversion rate is 95% and the gel rate is 0.6% when PF8DM content is 4 wt%. The as-prepared emulsion has excellent storage, dilution and centrifugal stability. The water contact angle of latex film is 118.6°when PF8DM content is 6 wt% . The latex film has low water absorption and excellent water repellent properties as the bonding rate of PF8DM reaches 89.4%. Under the same condition of the total fluorine content, the water absorption of latex film was greatly reduced and its hydrophobicity was enhanced significantly.