Abstract: With the expansion of titanium alloys in ship and ocean engineering, stress corrosion has become a problem that must be faced. Here is introduced the research situation of stress corrosion in titanium alloys from the aspects of the electrochemistry effect, metallurgy effect, the role of hydrogen and the crystallography effect. Based on the current study on stress corrosion of titanium alloys, the existing problems of the research are put forward and further study prospected.