To understand the present status of the issue of H₂S stress corrosion in petrochemical special equipment, an integrative comparison among the latest standards released from international authorities such as NACE, EFC and ISO is conducted in this paper. A compendious overview containing the environment definition, test method, influence factor, evaluation standard of stress corrosion and the material demand in H2S stress corrosion issue is accomplished. Meanwhile, a discussion of the causation, test method and elimination measure of welding residual stress has also been done.