本研究融合了高管团队断裂带与股权结构理论，利用中国电子信息产业上市国企面板数据，采取负二项式模型分析高管团队任务断裂带与创新绩效间关系及混合股权结构调节效应。结果表明：（1）当国有与非国有大股东的股权制衡程度大时，高管团队任务断裂带强度对创新绩效具有显著负向作用，而当国有与非国有大股东的股权制衡程度小时，高管团队任务断裂带强度与创新绩效间关系不显著；（2）随着大股东中机构投资者持股增大，高管团队任务断裂带强度对创新绩效正向作用增强。为了发挥高管团队任务断裂带对创新绩效积极作用，混合所有制国企需权变地安排股权结构缓解不同性质股权的利益冲突，增强高管团队知识整合。

Based on the panel data of Chinese listed and state-owned electronic and information companies, applying the theories of TMT faultlines and ownership structure, we probe the relationship between task-related TMT faultline and innovation performance, as well as the moderating role of the mixed-ownership structure in the relationship between TMT task-related faultline and innovation performance in the state-owned companies. The results of Fixed-Effects Negative Binomial Model analysis indicate that, first, the relationship between task-related TMT faultline and innovation performance is weakened when the level of balance between the equity proportion of big shareholders who represent state ownership and that of big shareholders who represent private ownership is high; while the relationship is not significant when the level of balance between the equity proportions of the above-mentioned two types of shareholders is low. Second, the positive effect of task-related TMT faultline on innovation performance is strengthened when the equity proportion of institutions investors increases. To strengthen the positive impact of task-related TMT faultline on innovation performance, enterprises with mixed-ownership structure should contingently arrange ownership structure to reduce the interest conflicts between the two types of shareholders, and try to improve knowledge integration within the TMT.