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When carrying on the training of element tactics based on the flight simulator system,it is found that the image jittering occurred while watching remote simulator from local simulator virtual scene. It badly affects the immersion sense of virtual simulation. Firstly the virtual scene image jittering phenomenon of simulation training system is introduced in this paper. And then the internal reason is analyzed, pointing out that the jointly effect consisting of the diversity of simulation grading of different models and the randomness of net delays result in time-space inconsistency problem of the distributed system which furthermore results in high frequency jittering of simulation data. when the average amplitude of jittering data exceeds some value defined as threshold value, the jittering data is showed as the visual jittering of virtual scene. Based above analysis, the relationship between the distance of entities and the threshold is measured , and the correct way of elimination of image jittering is reasoned. Lastly the elimination method of image jittering of virtual scene is proposed and its validation is proved.