The Industrial clustering refers to the phenomenon that a large number of enterprises and organizations in close relation which gather in a certain area. The industrial clustering relies on the perfect division and coordination of work system, sensitive and effective information communicative channel, and the developed market mechanisms can bring stronger competitiveness to enterprise in reducing the cost of goods, promoting the technological progress and improving the adaptive capacity of the market, especially bring important influence on the development of the regional economy, become the pillar of regional economic growth.The article studies the ultra hard material development model in Zhengzhou city by the methods of theory combined with cases. The ultra hard material industry of Zhengzhou, a phenomenon of industrial clustering, shows the competitive advantages of industrial clustering in many aspects. To have a more deep understanding to the forming reasons and mechanisms of the competitive advantages of the ultra hard material industry of Zhengzhou and provide opinions to the development of the industry, the article firstly describes the theory of industrial clustering, and then makes an analysis to the competitive advantages of the ultra hard material industry of Zhengzhou by using the Diamond Model of Poter" s in combination with the formation and the present situation of the industry, and finally works out the development model of the industry in Zhengzhou.The article is composed of five parts:The first part is the analysis to the theory of industrial clustering.Different positions about the industrial clustering theories are put forward and commented. The nature, types and competitive advantages of industrial clustering are described. Industrial clustering is the catalytic agent for enterprises to have competitive advantages by way of clustering reaction. Poter" s Diamond Model theory is emphasized in this part. The theory puts forward the main conditions which affects the development of industry: the factor condition, the demand condition, the related and supporting industries, the firm strategy, structure and rivalry. The four conditions can, by matching with one another, create a dynamic, encouraging and fierce competitive commercial environment. In addition, there are two other assistant factors: government and opportunities. These two factors and the above four factors provide a fine surroundings to promote the competitiveness of enterprises or industries.The following parts applies the Diamond Model to analyse the advantages of the ultra hard material industrial in Zhengzhou and to choose the development models.The second part applies the Diamond Model to make analysis to the competitiveness, benefit and shortcomings of the ultra hard industry of Zhengzhou. On this basis the development model of the industry is put forwards. The model is a fit goal to the development of the ultra hard industry of Zhengzhou and it can serve for the local economy and promote the local economy development.The third part makes an analysis to the advantages of industrial clustering of the ultra hard material industry of Zhengzhou. It is concluded that the advantages are mainly relied on the strong supports by the relative industries and the clustering and possession of advanced produce elements.The fourth part is the extension of the third part. It states that the development of ultra hard material industry should pay importance to the clustering of produce elements, to development of relative industries in the Zones, and to the roles of the local government.The final part makes a conclusion to the whole article. By Poter" s Diamond Model theory, the development of the ultra hard material industry of Zhenzhou can adopt the industrial clustering development model, because the model can be based on the abundant and clustering produce elements, development of relative industries and the support of the government.The innovation of the article is that the article, by application of the Poter" s competitive economics.