Good vision is a important safety factors in operation forklift. This paper have studied on the visual field forklift truck. A virtual driving operation model for forklift truck was proposed by means of sight box-plot method and applying ergonomic simulation software-Jack based on the 5th percentile Chinese adults body size. And Identified the drawbacks of present forklift truck existing in its front view and rear view and while loading and unloading goods at a certain height. Then we proposed corresponding suggestions on how to improve this and optimize its design, such as install onboard visual system and optimize the roof of forklift. Furthermore, the results of optimisation was validated by means of a case study, demonstrating its capacity to reduce blind angle of sights, which is of some significance for forklift design.%良好的视野是驾驶员操作叉车时重要安全因素。针对叉车驾驶员的视野仿真及优化问题，基于视线盒形图方法，利用人机工程仿真软件Jack，以第5百分位中国成年人人体尺寸构建了叉车虚拟驾驶员操作模型及连贯的动态行为视野仿真分析。辨识出叉车设计中侧面视野的可见范围比较好，前方视野、后方视野及装卸高处货物时存在明显的视野缺陷，提出增加车载可视系统和护顶架优化等改善建议，并进行了优化设计。最后，对优化结果进行验证，减少了视野死角的问题，为叉车设计提供了一定的参考。
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