Abstract:The research and application progress of Ti alloy oil country tubular goods (OCTGs) at home and abroad were reviewed, and the chemical composition, microstructure and mechanical properties of Ti alloy OCTGs were also referred. The resistance to uniform corrosion, local corrosion, erosion, corrosion fatigue and stress corrosion cracking (SCC) of Ti alloy OCTGs in the environments of the completion fluid, the acidizing fluid and the production conditions were discussed. Moreover, the gap in the research and development of the Ti alloy OCTGs between China and foreign countries was pointed out, and the application prospect and the development trend of Ti alloy OCTGs in the well of high pressure and high temperature (HPHT) oil and gas field were also forecasted.