A kind of quaternary ammonium salt was immobilized onto the coconut shell activated carbon, which was exploited to catalyze continuous cycloaddition of CO2 to epichlorohydrin (ECH) in packed bed. The samples were characterized by N2 Adsorption-desorption, Fourier transform infrared spectroscopy (FT-IR), hermogravimetric analysis, and X-ray photoelectron spectroscopy (XPS). The effects of pressure, temperature and reaction time on the cycloaddition reaction were investigated. The catalyst showed a high selectivity of  over 98% to chloropropene carbonate(CPC) with a conversion of 50.3% in the packed bed as the WHSV of ECH was 14.1 h-1 at 140 °C and 1.4 MPa.