Hydrogen sulfide is a kind of poisonous and harmful gas,and it will pollute atmosphere environment if exhaust it directly.There are a lot of desulfurization methods.The desulfurization experiment and reaction mechanism in which the activated carbon is soaked with zinc nitrate solution is researched on the basis of dry-desulfurization.The experimental results indicate the desulfurization efficiency of the desulfurizer of Load Zinc-Activated Carbon is better than that of the activated carbon,and the higher the high of the desulfurization agent is,the better the desulfurization efficiency is.The desulfurization mechanism have physical and chemical absorption.