A series of synthesis and characterization of self-crosslinkable fluorinated acrylate copolymer was carried out by the starved semi-continuous seed emulsion polymerization.n-Butyl acrylate(BA), with methyl methacrylate(MMA) and dodecafluoro- heptylmethacrylate(DFHM) served as the main monomers, sodium dodecyl sulfate SDS and OP-10 served as emulsifier, dodecafluoro-heptylmethacrylate(DFHM) served as Fluorinated monomer,diacetone acrylamide(DAAM) and adipic dihydrazide(ADH) served as crosslinking monomers. The effects of Fluorinated monomer to ketone-hydrazide crosslinking and the influences of ketone-hydrazide crosslinking to mechanical property and water absorption of latex film were studied. FTIR,TEM,SEM and contact angle measurement characterizing results displayed that the crosslinking reaction of keto group and hydrazine group can work smoothly at room temperature, the fluorocarbon hydrophobe shielded a fraction of keto group, blocked the crosslinking to a certain extent. The adding of fluorocarbon hydrophobe can increase coating surface’s hydrophobicity greatly, reducing its water absorption and increasing its contact angle. The crosslinking can improve the fluorocarbon emulsion’s comprehensive performance effectively, when the DFHM amount was 7.5 % (wt) and DAAM amount was 4 % (wt), the crosslinked film exhibited good hydrophobic properties with the water contact angle of 96.8°, the water absorption of 8.5 %and the tensile strength of 24.8 MPa.