Abstract: The experiment on the silver coupon corrosion by different proportion of sulphur and sulphide for jet fuel is made. The test results show that the corrosion amount on the silver coupon from elementary sulfur with different density is not the same, the color of silver coupon cannot be an individual black; when elementary sulfur solution contains mercaptan, the color of corroded silver coupon appears multi-color. The elementary sulfur and mercaptan concur in jet fuel and the corrosion level varies as the time. The further experiment shows that olefin compound will produce peroxide when exposed to sunlight, which will inhibit silver corrosion of sulfide to an extent.