Philosophical thought of the Vietnam people is not only contained in the written wo'rk, but also reflected in the folklore of the era before including mythodology - the oldest folklore genre. It is the philosophical ideas of the origin of the world, space and time, the relationship between matter and consciousness, the human's worldview, the epistemology... Especially, the materialist thinking about action stems from reality. The study of philosophical thought in mythology is not only to search the connection of past and present, but also to contribute to the understanding of the cultural heritage of thinking of the ancestors and the need to preserve other invaluable treasures.