To　evaluate　freight　performance　under　the　combined　operations　of　surface　and　underground　logistics　systems,　integrated　logistics　facilities　network　designs　are　depicted　according　to　city　logistic　features.　Then,　the　design　basis　of　underground　freight　vehicles　and　a　method　for　estimating　intermodal　transportation　costs　are　proposed.　Furthermore,　based　on　the　case　of　Beijing,　the　dynamic　performance　of　transportation　costs,　overall　transport　capacity,　flow　configuration,　and　traffic　safety　external　benefits　for　the　proposed　integrated　network　under　different　parameters　of　underground　vehicle　speed,　departure　frequency,　and　facility　capacity　is　simulated　and　analyzed.　The　results　indicate　the　following:　(1)　The　combination　of　road　and　underground　logistics　networks　is　conducive　for　reducing　city　logistics　expenditures　while　improving　transport　efficiency.　(2)　Compared　with　vehicle　speed,　the　handling　capacity　of　underground　hub　nodes　and　the　traffic　capacity　of　trunk　tunnels　have　a　more　significant　impact　on　the　service　level　of　an　integrated　network.　©　2022,　Editorial　Office　of　Tunnel　Construction.　All　rights　reserved.