The society has its headquarters in Tokyo, with seven branches in appropriate regions of the country, as shown below.

The executive committee, consisting of twenty-six directors headed by president (Dr. Prof. Ryuichiro SATO, The University of Tokyo, for the 2017-2019 term), fulfills functions constantly in collaboration with the administrative board at the headquarters.


Seven branches in the Hokkaido, Tohoku, Kanto, Chubu, Kansai, Chu-Shikoku and Nishi-Nihon districts coordinate activities