Based on long-term research activities on fusion engineering, eleven key technologies for future fusion reactors, especially for demo reactor, were selected in the Working Group of fusion research under the Council for Science and Technology, MEXT.

In this paper, the recent achievement on the following key technologies will be summarized, which are strongly related to the Working Group proposal, 1) Fusion engineering research project in National Institute for Fusion Science, 2) High Tc superconducting magnets, 3) LiPb blanket system 4) Tungsten divertor and 5) Fusion engineering activities under the Broader Approach (BA) framework.