施工方案优选涉及的因素较多 ,决策者应从系统的观点出发 ,综合考虑各种因素进行比选。模糊层次综合评价和灰色关联分析应用于方案优选均能取得较好效果。通过对这两种方法的分析、对比 ,揭示了两者的异同 ,并在此基础上阐明了两者的适用范围及在实际应用中应注意的相关问题 There are many factors involved in the construction scheme optimization. Policymakers should make systematic comparison and consider various factors from a systematic point of view. Fuzzy comprehensive evaluation and gray relational analysis can be used to optimize the program can achieve better results. By analyzing and comparing these two methods, the similarities and differences between the two methods are revealed, and on this basis, the applicable scope of the two methods and the related problems that should be noticed in practical application are clarified