Rationality of the industrial structure is the essence of the economic development, as well as the key to promote the sustainable, steady, and harmonious development of the economy. Guided by the Scientific Development Concept and Sustainable Development Theory, this article has probed into the building of a rational evaluating index system of the industrial structure. It proposes a reasonable choice criterion of the industrial structure, which is based on the sustainable development with the coordination of “economy, society, resources, environment, and technology”. Accordingly, a set of rationale evaluating index system is designed, laying the foundation for the overall evaluation and measurement of the rationality level of the regional industrial structure.

Real estate Industry is capital-intensive. Cost management is very important for real estate. Efficient cost management is one of important means that can ensure sustainable development of the real estate business. Now, we must find out the efficient cost management means according to analysis the importance of the real estate and the problem exist in it.

The country's economic development not only reflects the increase of the GNP, but also must be accompanied by the development of the industrial structure. Through studying the development status of Chinese industrial structure, I summarize the Chinese first industry continues to decline, but the proportion and structure deviation degree are still on the high side. The second industrial proportion is rising slowly. The proportion of the third industry is small, and the development of internal structure is not perfect etc. So I suggest that we must continue to consolidate the foundation of agriculture. Accelerate adjustment of second industry, and increase investment in scientific and technological R & D. We need to promote the productive service industry, consummate the internal structure of the third industry. The purpose is that provide basis and reference for the formulation of government policy of industry structure adjustment.

Low-carbon economy has become a hot research field in all walks of life currently. As a way to achieve low-carbon economy, industrial restructuring has been widely studied. In order to promote research in the field, and lead to the development of China's low-carbon economy, this article will give us a summary and a brief review of representative research achievements referring to industrial structure low-carbon adjustment in China's academia. They contain four aspects: intensions of industrial restructuring from the perspective of low-carbon economy, influence of industrial restructuring on carbon emissions, low-carbon industries, and strategies of industrial restructuring from the low-carbon economy aspect.

Nowadays, Real estate is playing a significant role in economic growth in China currently, and has been closely linked with different industries in the national economy. Taking Shan ?xi Province as an example and adopting the Grey Relevance Analysis Approach mentioned in Grey Theory, this article analyzes the relevance between the real estate and three industry sub-industries in secondary industry and tertiary industry. It shows that the relevance goes up between the real estate and the primary industry, secondary industry, and tertiary industry, the real estate has made great contribution to the whole economy in Shan ?xi Province, and it has a promising market as well.