Abstract: Modularization is very important to the development of industry cluster, and it stands for the important direction of high technology industry. Because of the uncertainty and fierce competition in the development of industry cluster, there are many kinds of risk in the course of industry cluster’s modularization. Based on the microstructure of modularization, the correlative risk in modularization of industry cluster is analysed, such as compatibility risk, network risk, ecology risk, information risk and lock-in risk.The market structure and profit feature of modularization product is heavily influenced by these risks, and the upgrade of high technology industry is blocked. In order to control or eliminate these risks and reduce its harm and influence, corresponding measures should be put into the practice to promote the course of value modularity integration and industry convergence, and the large, composite, and sensitive modularization industry cluster should come into being.

Key words: industry cluster, modularization, microstructure, risk feature