Abstract: Considered as an integral part of ecology, eco-ethics represents the philosophi cal reflection of the academic community about the ecology of human existence.S ince its establishment, eco-ethics has produced a series of valuable results an d performed a positive role in keeping ecological balance and environment protec tion, and the areas and subjects involved have drawn world-wide attention.Of a ll the subjects, the standard and philosophy fix of eco-ethics and its value sub ject has become the core.