Abstract: The copper corrosion test of refined FCC gasoline and gasoline product in pool is often not qualified in SINOPEC Jinan Company. The cause of off-specification of gasoline copper corrosion was analyzed and countermeasures were put forward. It is found that the element sulfur in refined FCC gasoline from straight run gasoline（SRG） is the main reason for that phenomenon. The problem of off-specification of gasoline copper corrosion has now been solved completely by means of changing process scheme where the SRG containing elemental sulfur，the stabilized gasoline from the No.1 catalytic cracking unit and part of the stabilized gasoline from the No.2 catalytic cracking unit are processed in S Zorb unit and the remaining stabilized gasoline from the No.2 catalytic cracking unit is sent to gasoline desulfurization and deodorization unit.