Abstract: By using dicyclopentadiene reacting with maleic acid, dicyclopentadiene maleate (DHCM) was synthesized and its structure was characterized with IR and NMR spectrumThe co-polymerization of vinyl acetate and DHCM was studied at 70℃The structure and particle morphology of the co-polymer were characterized with IR and TEMThe effects of DHCM content on the monomer conversion and average particle size were investigatedThe results showed that when DHCM content was 2%(mass), the synthesized latex was of high conversion efficiency, small particle size and good stability.