当前我国产业集群正处于过渡时期,市场机制的完善提高了市场交易主体间扩展信任水平,从而降低基于扩展信任的交易费用水平。随着集群规模不断扩大,理性的企业会选择更多地与传统集群外有竞争力的企业进行交易,从导致产业集群由以血缘与亲缘等为纽带的传统集群向基于扩展信任的现代集群演进。本文以浙江永康五金产业群为例对此进行了分析,提出了产业集群发展的几点方略。 At present, China’s industrial clusters are in a transitional period. The improvement of the market mechanism improves the level of trust between market participants and thus reduces the transaction costs based on extended trust. As the scale of the cluster continues to expand, the rational enterprises will choose to trade more with the traditional competitive enterprises outside the cluster, from the industrial clusters led by blood and kinship as the traditional cluster to the modern cluster based on the expansion of trust evolved . In this paper, Zhejiang Yongkang hardware industry cluster as an example of this analysis, put forward some strategies for the development of industrial clusters.