Abstract: Bourdieu's theory of practice makes, as is known, a substantive contribution to advancing the sociological research. It is necessary to examine Bourdieu' s epistemological foundation first in order to understand the theory' s core keyston. By tracing Bourdieu' s critique toward objectivism and structuralism, we could find that the theory is characteristic of relative and objective trait, which endows his theory in return some effect on his reflection. Bourdieu's reflection on the previous sociology just demonstrated this effect.