In　order　to　study　the　blasting　vibration　effect　of　different　blasting　points　of　the　tunnel　bore,　the　pilot　tunnel　in　multi-arch　tunnel　was　used　to　carry　out　the　test　of　different　blasting　points　of　the　bore.　The　results　show　that:　1)　the　peak　velocity　generated　by　blasting　at　different　initiation　points　of　the　hole　is　different,　and　the　magnitude　of　the　peak　velocity　is　reverse　initiation　>　Intermediate　initiation　>　Forward　initiation;　2)　The　frequency　distribution　range　of　blasting　vibration　signal　under　the　three　initiation　positions　is:　forward　initiation　>　Reverse　initiation　>　Intermediate　initiation;　At　the　same　time,　forward　initiation　is　more　conducive　to　the　main　frequency　of　blasting　vibration　signal　moving　to　high　frequency;　3)　Compared　with　reverse　initiation　and　intermediate　initiation,　forward　initiation　can　better　disperse　energy,　so　that　the　energy　is　transferred　from　low　frequency　to　high　frequency,　so　that　the　blasting　vibration　is　relatively　small,　which　is　more　conducive　to　the　safety　of　tunnel　lining　structure.　©　2023,　The　Author(s).