Abstract: This paper takes Guanzhong urban agglomeration as research area，based on industry data of the five prefecture-level cities as Xi'an，Xianyang，Baoji，Weinan，and Tongchuan of Shaanxi Province，China in 2009 from Statistical Yearbook （2010） to analyze the five cities' sector similar level of industry and the similar level of regional industrial structure. The results are indicated as follows：13.9% of the industrial industries in Guanzhong urban agglomeration exist the industry isomorphism problem，36.1% of the industrial industry exist a serious industry isomorphism problem. The homogeneous degree of industry between the core-level city Xi'an and secondary city Baoji is high （0.678），which goes against the industry transferring and extending，as well as upgrading industrial chain. Between Xianyang and Weinan and between Xianyang and Tongchuan，the industrial isomorphisms are separately at high degrees. This problem blocks the industrial division and regional cooperation，which make the regional coordination and consolidation are in need. The article selects location quotient，industry specialization，compared labor productivity indicator as indicators，takes the data of section industrial production and employment of the five cities to evaluate. Then through comprehensive comparison the industry with comprehensive advantages among the five cities is got. And the further main orientation for industry development accord to the relevant information is determined. In accordance with industry geographic distribution，combining industry specialization，industrial scale，industrial chain and product division in the various regional and specialization condition in Guanzhong area，it is proposed that Guanzhong should focus on the development of automotive manufacturing，petrochemical，nonferrous metals，textiles and garments，electrical and mechanical equipment，pharmaceutical manufacturing，food，beverage and tobacco as seven intensive industrial belt. As the most effective industrial spatial organization form，industry-intensive belt provides theoretical support of producing scale and agglomeration effect in Guanzhong city group. Meanwhile，it need to be aware that on the one hand，the planning and construction of Guanzhong industry-intensive belt should promote the coordinated development for advantage industries on the basic of industrial regional division；on the other hand，it requires policy support and guidance from the government. In addition，in the process of constructing Guanzhong industry-intensive belt，the different political and economic status between Xi'an and the surrounding cities determine the difficulty of freely movement in producing materials. All kinds of talented people crowding together in Xi’an results in the brain circulation can not meet the needs of the surrounding areas and industrial development. Therefore，it urgently needs to establish regional networks of industrial system to prompt a number of independent industrial enterprises rely on themselves，out of the consideration for common interests，to hold long-term associations on the basis of mutual trust，to get collaboration and cooperative relations. This intensive industrial network system is essential for the construction of Guanzhong industry-intensive belt．

Key words: Guanzhong urban agglomeration, industry, industrial structure similar, industrial division, industrial concentrated belt