Abstract: The commercial application of RSDS-II technology in Sinopec Qingdao Petrochemical Company is introduced. Results show that the sulfur content of the treated catalytic cracking gasoline can be dropped to less than 150 μg/g, which meets the requirement of National Emission Standard III, and it can even be less than 50 μg/g, which meets the requirement of National Emission Standard IV. In addition, the RON loss of the product is only a little. It is shown from the data of long term running, the product quality is stable and the unit is running steadily, although the sulfur content of feed varied significantly (217—1 400 μg/g), in conclusion, RSDS-II technology can well meet the need of upgrading gasoline quality.