Since Japan entered into the Modern, Bushido as ideology of Edo-period became the basis of Japanese Business Ethics in accordance with the Japanese social revolution. With respect to the forgoing, the author of ”Bushido: The Soul of Japan,” Nitobe Inazô is especially important, but there is very tiny research on him. This thesis is focusing on two articles of his best seller ”Ji kei”, ”Spiritualization of riches and honors” and ”To spiritualize business.” The study demonstrates that the former is a kind of sharing common circulation closely related to socialism economic model, also a sense of riches based on morality. The later is to be otherworldly what thought should be, together with an individual realization without purpose of profit-pursuing. The two concepts jointly indicate ethical education to be the core, thus constituting preliminary thought of Nitobe's Japanese business ethics theory, ”Bushido and Syonindo”.