He graduated from the Agricultural School in Sapporo, Hokkaido (1884).
Shiga Shigetaka started the magazine Nihonjin (The Japanese) with Setsurei Miyake.
He was appointed chief of the Mountains and Forestry Bureau of Agriculture and Commerce Ministry, and a counselor of the Foreign Office.
He saw action in the Russo-Japanese War (1904-1905). Explored many little known parts of the world. Shiga Shigetaka became professor at Waseda University and wrote books on geographical and political subjects.
Shiga Shigetaka was elected to the House of Representatives as member of the Seiyiikai Party.