In　order　to　improve　the　utilization　of　hot　electrons　in　the　Ag/TiO2　photoanode,　there　is　a　need　to　increase　the　contact　area　within　Ag/TiO2　interface　and　transform　the　migration　mode　of　hot　electrons.　In　this　work,　hierarchical　Ag/SiO2/TiO2　nanobowl　(NB)　arrays　with　large　pore　size　were　fabricated　and　their　local　electric　field　distribution　and　variation　of　electron-hole　concentration　were　simulated　by　COMSOL　software.　The　results　demonstrate　that　the　nanobowl　with　curved　surface　contained　more　Ag　particles,　moreover,　the　addition　of　SiO2　layer　gives　assiatance　to　increase　light　absorption　and　enhance　LSPR.　A　number　of　hot　electrons　can　own　the　opportunity　to　inject　into　TiO2　in　form　of　tunneling　instead　of　surpassing　the　Schottky　barrier.　The　impedance　radius　of　the　Ag/SiO2/TiO2　is　the　smallest　and　the　photocurrent　density　is　the　highest,　indicating　the　rapid　migration　of　electrons.　©　2022,　Science　Press.　All　right　reserved.