In this thesis uses Edo scholar Yamaga soko "Son Shi en gi" as the object of research. Through the background of Edo and the changing of Japan’s art of war to inspect the object. To explore Yamaga soko’s concept of "Son Shi" and the Chinese art of war "Son Shi" in the cause of peace in the Edo period prevalence.
Origin of China and Japan’s art of war are learning from "Son Shi". To observe the history of Japan’s art of war, can be found the research about "Son Shi" is very popular in the Edo Period. However, Japan''s Edo period is different from China (Ming and Qing) , it’s about 260 years of peace. The art of war "Son Shi" in the Edo period was mainly due to the prevalence of the shogun Tokugawa uses it as a military school textbook. Widely published, resulting in contemporary scholars competing notes, research, to let the art of war of Japan self-contained in the Edo period. War of Military Science was originally an important science of combat. After entering the Edo period, gradually become self-cultivation samurai’s heart of learning.
Edo period in Japan, various schools, academics giving birth. Yamaga soko whose famous as the scholar of Confucianism and military science in Japan. He had his prophet insight on the Bushido, retro Confucianism, Japan doctrine, etc. Especially his "Son Shi" more comments received high evaluation, known as the comprehender of "Son Shi". Yamaga sokon "Son Shi en gi" is in the later years of his writings. The book clearly explains, "Son Shi" of meaning, structure, and construct scientific theory of "Son Shi". "Son Shi en gi" is still highly valuable in the study of "Son Shi" until now.