Natural　characteristics　analysis　of　wholly　grouted　bolts　in　soil　medium　was　presented,　and　a　calculation　formula　of　natural　frequency　and　natural　vibration　type　was　derived.　For　the　lack　of　experience　about　the　applicability　of　permanent　anchorage　in　vibration　environment,　a　dynamic　test　of　one　field　under　train　excitation　is　conducted　to　avoid　anchorage-train　resonance.　The　results　show　that　the　first　order　longitudinal　natural　frequency　of　anchorage,　field　predominant　frequency　and　train　dominant　frequency　distribute　in　different　frequency　band,　and　train　excitation　causes　no　resonance　effect　with　anchorages.　Ralated　researchs　provided　a　important　reference　method　for　preceeding　research　on　the　applicability　problem　of　bolt　support　structure　in　complicated　environment.