Environmental law is a new legal department spawned by the modern environmental crisis, and its historical mission is to deal with the modern environmental crisis faced by human beings. The modern environmental crisis is not the crisis of the environment itself but the crisis of human beings, which is caused by the deterioration of the natural environment. From the point of view of environmental justice, there is no doubt that the direct reason is that human beings armed with modern science and technology unscrupulously develop, plunder and destroy nature. From the national level, the root cause of the problem of international environmental justice is the exploitation of resources by technology economy countries to resource economy countries, the essence of which is the unfair distribution of environmental benefits between developed and developing countries. In view of the problems existing in the fair distribution of environmental benefits in international environmental justice, it is necessary to raise the essence of global environmental problems to the height of the philosophy of environmental law, so as to guide the fair distribution of environmental benefits among different countries through environmental ethics.