Abstract: Two pathways (the dehexanizer and the feed prefractionation) for reducing the benzene content in stabilized reforming gasoline were compared. It is found that the comprehensive energy consumption of the reformer unit decreases by 147.97 MJ/t through feed prefractionation, the reforming gasoline yield increases 7.36 percentage points, and the total liquid yield increases by 0.69 percentage point, gas and the loss reduce by 0.36 percentage point. The economic benefit increases by 5.783 4 million Yuan per month. And suggestions for further optimization of the prefractionation system are put forward.