Abstract: Logic always goes in parallel with history.with the historical development of human practice in its broadth and depth ethics has developed from the traditional anthropocentrism to the non-anthropocentrism,then to the temporary bioethics.In the process of this development,it is not the simple negation of one or the other, but it's a dialectical negation including and absorbing the reasonable and positive factors of the previous phases.

Key words: anthropocentrism, non-anthropocentrism, bioethics