| With the gradual implementation and deepening of the development of western regions, the development of the western region gets into a difficult position. On one hand, we need to advance the development of west region, making western people live a happier life; On the other hand, serious environmental problems have emerged in the west. The fragile ecological environment in the west can not afford to the so called" modernization" development idea and develop mode, which is based on high resource consumption to boost economic growth. So, to solve the predicament of western development, a sustainable development mode must be chosen.Through an analysis of environmental problems in the western region, we can learn that the origin of emerging environmental issue in the west mainly have these respects. Firstly, people have fallen into the one-sided human centre doctrine because of a deviation of the environmental ethics; Secondly, with the invasion of the industrial civilization of the west, the so-called "modernization" development idea and development model have occupied the leading position, people have twisted their understanding of happiness and development, a lot of traditional culture have faded away. By the look of environment, the environment is one of public goods which have stronger externalities, so environmental protection is very apt to fall into "the tragedy of public goods". Finally, the legal systems in our country about environmental protection need to be improved its unreasonable places.So, the following things must be done to realize the sustainable development in the west. First of all, correct the deviation of environmental ethics, enter into the real human centre doctrine and establish the idea of scientific and sustainabledevelopment. Secondly, respect and protect cultural diversity, respect different understandings of happiness and choices of development roads to promote western sustainable development. Moreover, while advancing sustainable development concretely, western people should change the development model of high consumption and high pollution and develop ecological agriculture and tourist industry in a great effort. Finally, improve the implementation means of sustainable development. Not merely improve the relevant legal systems to overcome the problem of externalities, but also set up and amplify the market mechanism of environmental management. |