为了客观地反映各因素对目标问题的影响程度,本文首次提出了最佳因素权重概念。定义最佳因素权重为研究区域内系统质量处于极限状态时的各因素权重之组合。结合深港西部通道工程深圳湾公路大桥桥址比选方案,详细说明了本方法的研究思路及其确定方法。通过最佳因素权重方法,能客观地、定量地确定出多因素复杂系统中的最优场址。 In order to objectively reflect the degree of influence of each factor on the target problem, this paper first proposed the concept of optimal factor weight. Define the optimal weight of factors as a combination of the weight of each factor when the quality of the system in the study area is in the limit state. Combined with the comparison of Shenzhen Bay Highway Bridge Bridge site selection scheme of the Shenzhen-Hong Kong Western Passage Project, the research ideas and determination methods of this method are described in detail. Through the optimal factor weighting method, the optimal site in the multi-factor complex system can be objectively and quantitatively determined.