Emergy theroy provides a common basis by converting all resouces into equivalents of one form of energy, solar emergy, a measurement of the past and present environmental support to any process occurring in the biosphere and some index indicating eco- economic efficiency. Inner Mongolia plays an important role in Chian west development, eco- environment construction, structure adjustment and nation' s steady going. Emergy synthesis was explored here to research its value of main stored resources, total emergy consumption, inflow and outflow of emergy, emergy input rate, environmental loading rate, emergy sustainable index as well as population loading capacity and other index. In addtion, several relevant indicators were compared with those of other countries. The results showed that its ration of emergy to GDP was 27.1 × 1012sej/$, meaning slow flow of money and material with lower economic development compared to other develped area, and that 75.21 percent of total emergy use was irrenewable resources and self- supported emergy was 98.11 percent of total emergy use, which indicated that the economic increasing mainly depended on the large number of raw material input. This traditional extensive model consumed a great of resources, making the industrial structure and comparative benefit in lower level. Some related measures and policies for the sustainable development of Inner Mongolia were addressed. It should pay more attention to adjusting its industrial construction to improve its production efficiency, making great efforts to get more feedback with high quality emergy for its prosperous competitive ability, and also quickening the establishment of real capability with good environment and condition to accelerate the development of tourism industry.one form of energy, solar emergy, a measurement of the past and present environmental support to any process occurring in the biosphere and some index indicating eco- economic efficiency. Inner Mongolia plays an important role in Chian west development, eco- environment construction, structure adjustment and nation' s steady going. Emergy synthesis was explored here to research its value of main stored resources, total emergy consumption, inflow and outflow of emergy, emergy input rate, environmental loading rate, emergy sustainable index as well as population loading capacity and other index. In addtion, several relevant indicators were compared with those of other countries. The results showed that its ration of emergy to GDP was 27.1 × 1012sej/$, meaning slow flow of money and material with lower economic development compared to other develped area, and that 75.21 percent of total emergy use was irrenewable resources and self- supported emergy was 98.11 percent of total emergy use, which indicated that the economic increasing mainly depended on the large number of raw material input. This traditional extensive model consumed a great of resources, making the industrial structure and comparative benefit in lower level. Some related measures and policies for the sustainable development of Inner Mongolia were addressed. It should pay more attention to adjusting its industrial construction to improve its production efficiency, making great efforts to get more feedback with high quality emergy for its prosperous competitive ability, and also quickening the establishment of real capability with good environment and condition to accelerate the development of tourism industry.