The Sumitomo Consortium is one of the major consortiums in Japan, and its corporate management model has also received much attention. This article takes the Sumitomo Family Law as the starting point, adopts interdisciplinary and text analysis methods such as history and ancient text lexics, analyzes the basic content of the Sumitomo Family Law, and then analyze the historical context, historical background, and the influences of it. With the Edo era as the main axis of time, from the perspective of 'filial piety' of ethical culture, discussing the embodiment of filial piety in the Sumitomo Family Law.