Abstract: Aiming at the shortcoming of obtaining an accurate assessment and a sound judgment of model parameters in real life, grey number is introduced to modify classic GERT network model. On this basis a supply chains risk identification model based on G-GERT is proposed according to the operational process of military logistic supply chains, where an example follows to demonstrate the application and evaluate the feasibility and effectiveness of the model.

Key words: Graphical Evaluation Review Technique（GERT） network, military logistic, supply chains, risk identification

摘要： 针对现实生活中对模型参数进行精确估计和判断的困难，引入灰数对经典GERT网络模型加以改进。在此基础上，根据军事物流供应链的运作过程，构建了基于G-GERT网络的军事物流供应链风险识别模型，并通过一个实例介绍了该模型的具体运用，验证了其可行性和有效性。

关键词: 图示评审技术（GERT）网络, 军事物流, 供应链, 风险识别