For increasing demand of titanium-based materials, and for making contribution to the development of Japanese material industry, it is essential to reduce production cost of titanium by developing new reduction process of titanium, which can replace the current Kroll process. When reviewing the past research works, there are many original studies and technologies developed. However, most of these technologies are not sufficient for practical development of the new process. The combination of some of these key technologies is expected to induce germination of the new process. After designing the target new process by assorting and arranging the past research findings, general program for development of the new process has to be initiated.