Due to excellent mechanical properties combined with low density, good corrosion resistance and weldability, titanium alloy acts as attractive structural materials for aerospace, ship navigation, weaponry and nuclear industry now. However, it`s high cost hinders the wide use of titanium alloy in different fields, and which is the key factor for not huge production as Al and further use of titanium alloy. Aiming at low cost of titanium alloy, three parts of raw materials, alloy preparation technology and cooperation of titanium industry were overviewed. On this basis, the trends and suggestions for the development of low-cost titanium alloys in the future are put forward.