Objective To study the plateau environmental adaptability and evaluation method of wheeled vehicles. Methods The primary connotation of vehicle environmental adaptability was elaborated. Combined with the plateau investi-gation, test data and theoretical analysis, the evaluation index system of plateau environmental adaptability for wheeled ve-hicles was set up. A fuzzy synthetic evaluation model for the plateau environmental adaptability of vehicles was established by using hierarchical analysis and fuzzy evaluation theory. Results The power performance, reliability, start ability and thermal balance of wheeled vehicles were the major performance indexes obviously affected by the plateau environment. The results indicated that the plateau environmental adaptability was ranked " ordinary" or " poor" . Conclusion The correct e-valuation result of plateau environmental adaptability could provide the basis for demonstration, design, selection or im-provement of wheeled vehicles on plateau.%目的：研究轮式车辆的高原环境适应性及其评价方法。方法通过分析轮式车辆环境适应性的基本内涵，结合车辆高原使用情况调研、高原实地试验以及理论分析，构建轮式车辆高原环境适应性评价指标体系，应用层次分析法(AHP)和模糊数学理论建立轮式车辆多性能指标的综合评价模型。结果轮式车辆的动力性、可靠性、起动性和热平衡等性能受高原环境影响最大，大部分轮式车辆的高原环境适应性等级为“一般”或“较差”。结论轮式车辆的高原环境适应性定量综合评价结果可以作为高原地区车辆论证、设计、选型或改进的参考依据。
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