在简要介绍相依网络理论的基本概念、基本原理和主要应用方法及成果的基础上，以修理专业网络、修理环节网络、管理层次网络等，解释了船舶等级修理的多网络特点，分别以修理网络、器材采购网络、装卸搬运网络和技术指导网络为基准网络，分析了与其他网络之间的相依性，并以算例验证了研究的必要性及方法的可行性。本文为运用相依网络理论分析查找船舶等级修理工期管理中的薄弱环节提供了方法支撑，对于提高船舶等级修理的工时强度，确保等级修理计划按期完成等，具有重要意义。

After the basic concepts，the basic principles and the main application methods and achievements of interdependent networks theory were briefly introduced，the multi-network characteristics in ship level repairing were explained，with the professional repairing networks，the repairing link networks and the management level networks as the case. The repairing networks，the equipment purchasing networks，the loading and moving networks and the technical guidance networks were respectively taken as the standard networks，whose interdependency between other networks was analyzed. In addition，the necessity of the study and the feasibility of the methods were verified by an example. This paper might provide methodological support for analyzing and finding weak links in the schedule management of ship level repairing，which means a lot to improving work intensity of ship level repairing and ensuring the ship level repairing finished on schedule.