在现有文献分析基础上，基于集群特征, 构建了以网络中心性和吸收能力作为调节变量、以知识获取作为中介变量的集群企业开放度对其创新绩效影响机制模型。选取浙江省3个产业集群中116家企业作为研究对象，采用回归分析等多种统计方法进行实证验证。结论表明：第一，知识获取在集群企业开放度对创新绩效的影响中起到中介作用，即集群企业开放度是通过影响知识获取进而影响创新绩效。第二，知识吸收能力在企业创新绩效形成过程的不同阶段中起到调节作用，其中潜在吸收能力有利于强化企业从创新开放度中获取知识，而现实吸收能力则在企业将获取的知识转化为创新绩效的过程中起到正向调节作用。第三，网络中心性越高，集群企业开放宽度对企业知识获取的正向效应越显著。研究结果有助于中国集群企业推进开放式创新的政策选择。

Based on the analysis of current literature, considering the characters of clusters, we construct a model of the influencing mechanism that firm's openness has on innovation performance with the network centrality and absorptive capacity as the moderating variables and the knowledge acquisition as the mediating variable. 116 firms in three industrial clusters in Zhejiang Province are selected as the research objects, and the regression analysis and other statistical methods are used for empirical validation.The result shows that, first, knowledge acquisition plays an intermediary role in the influence of openness on innovation performance, that is, the innovation performance of the cluster firms is influenced by the openness through knowledge acquisition.Second, the absorptive capacity plays a moderating role in different stages of the formation of innovation performance. The potential absorptive capacity is conducive to strengthening firms to obtain the knowledge from openness.The realized absorptive capacity plays a moderating role during the processes that knowledge abtained transform to innovation performance. Third, the higher the network centrality, the more significant the positive effect of the open width of the cluster firms to knowledge acquisition. The research result will help Chinese firms to promote open innovation policy options.