The　complexity　of　the　pairwise　comparison　process　in　the　analytic　hierarchy　process　(AHP)　and　the　limitation　of　consistency　are　challenges　that　need　to　be　addressed　when　there　arc　many　evaluation　factors.　An　improved　AHP　is　established　by　integrating　the　grey　correlation　model　(GCM)　and　AHP,　for　which　the　tedious　pairwise　comparison　process　can　be　abandoned.　The　improved　method　integrates　the　advantages　of　grey　system　theory　(GST)　and　AHP,　overcomes　the　inherent　limitations　of　AHP,　and　can　be　used　to　analyze　many　different　types　of　problems　that　were　previously　analyzed　by　AHP　or　GST.　In　this　paper,　the　improvement　process　is　presented　in　detail,　and　the　effectiveness　of　the　improved　AHP　method　is　verified　through　several　existing　examples.　This　work　uses　the　case　of　the　Suning　Square　project　in　Langfang,　Hebei　Province,　China,　to　apply　the　proposed　improved　AHP　to　construct　a　comprehensive　evaluation　system.　The　proposed　method　is　used　to　evaluate　the　construction　risk　of　foundation　pit　excavation,　thereby　providing　technical　guidance　for　efficient　implementation　of　the　project.　(C)　2021　American　Society　of　Civil　Engineers.