Abstract: Natural philosophy mainly embodies in the thought of the relationship between human and nature (universe).On this question Tujia people hold the point of view that relationship between human and nature is a kind of two-way,each containing the other.They think that people are the descendants of the universe;meanwhile,the universe is one of the component parts of human beings.This paper expounds and proves their viewpoint from the aspects as the mythology of genesis,the epic and social customs of Tujia people,and tries to probe into the reasons of its formation and the logic course of its development.

Key words: natural philosophy, people universe, two-way and containing