With the development of information technology, information island has become an obstacle to information resources sharing between cross-domains. Interoperability is the key technology to solve this problem. However, establishing good trust relationship is a prerequisite for achieving the interoperation between cross-domains. Under the background of information system interoperability! and from the perspective of the organizational trust relationship, the interoperability trust is studied. On the one hand, the qualitative and quantitative factors affecting the interoperability trust are analyzed, and the trust evaluation index system is established; on the other hand, with the characteristics of local autonomy and dynamic change of interoperability, and in view of the fact that the evaluation index system of interoperability trust is characterized by the comprehensiveness, fuzziness, dynamics and multi-dimension, a dynamic and comprehensive evaluation method for interoperability trust based on fuzzy variable weighting theory is proposed and studied. Finally, the feasibility of the research results above is simulated. It is proved through analysis that the proposed method could implement dynamic change of dynamic trust and interoperability logical reconstruction based on trust. It could also provide support for interoperability access control.%随着信息化的发展,“信息孤岛”成为阻碍跨部门、跨域信息资源共享的主要问题,而解决这个问题的关键技术就是互操作.不同部门之间实现互操作的前提是建立良好的信任关系.以信息系统互操作为背景,从组织信任关系的角度,对互操作的信任机制进行了研究.在构建互操作联盟的基础上,一方面,从组织信任关系背景下,分析了影响互操作信任的定性和定量的因素,建立了互操作信任评价指标体系；另一方面,为符合互操作局部自治和动态变化的特点,研究了基于模糊变权理论的互操作信任动态综合评价方法.最后,通过仿真对上述研究内容的可行性进行了验证.通过分析证明该方法能够实现互操作信任的动态变化以及基于信任的互操作逻辑重构.
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