Commercial application of CGP-1HN, a special catalyst developed by Research Institute of Petroleum Processing For Maxing Iso-Paraffin-Cleaner Gasoline Propylene process, was carried out in 2,800,000 t/a RFCC unit of Hainan Petrochemical Co. Ltd. The commercial application result shows that catalyst CGP-1HN has an evident effect on gasoline olefin reduction and liquefied petroleum gas propylene increment.