Abstract: By adjusting operation parameters，Shanghai VI gasoline, equivalent to Euro V gasoline (S is less than 10 μg/g) could be produced in Gaoqiao S Zorb unit. This paper analyzes the factors influencing the long cycle for production of low sulfur gasoline, including feedstock properties and fluctuations, cycle fluency of adsorbent, valve equipment failure rate and filter life. Some countermeasures are proposed.