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In order to improve the effect and efficiency of the aircraft maintenance training, and solve the problem that mechanical components disassembling process are complex and lack of interacting between person in the aircraft maintenance training,which cause the bad training effect and low efficiency. According to the components status, migration and the constraint conditions in the steps of the mechanical components disassembling process in the task, the disassembling process model are established by using the Grafcet. The training evaluation model is set up according to the weights in the steps. The result of the training is evaluated in quantity on the basis of the training operation situation .The model can support learning, training, evaluation pattern of training. Finally, the disassembly and evaluation process of the refuel valve on the maintenance training platform is taken as an example to verify that the model effective and practical and complete the interactive information presentation and the results evaluation