Environmental justice and ecological justice are two important concepts in environmental studies. Although they share certain common points, the difference between them is fundamental. Since environmental justice deals with the issue of humanity, its perspective is inevitably anthropocentrism, whereas ecological justice handles the issue of various species, which constitute nature, its perspective is ecocentrism instead. This difference potentially causes a problem, that pursuing environmental justice may harm ecological justice, and vice versa. This article discusses how the thought of Thomé H. Fang helps solve the above dilemma.