The corrosion behaviors of tubular goods under high temperature and pressure conditions of H2S/CO2 were investigated using an autoclave. The results showed that in five different temperatures, there existed definite differences for corrosion rates. However, under different conditions, it was clearly found that on both sides of the samples the corrosion products could be observed which consisted mainly of ferrous sulfide. The cooperative effects of both hydrogen damage caused by H2S corrosion and CO2 pitting corrosion formed the special corrosion features on the surfaces of the coupons, which clearly suggested that the corrosion of H2S/CO2 was the results of interaction of multiple factors.