Discussed　the　electric　detonator　initiating　technology　and　its　application　in　deep-hole　blasting　under　complex　environment　combining　with　engineering　practices.　Besides,　analyzed　the　hole-by-hole　accurate　delay　blasting　and　its　vibration　effect　and　control　technology　in　foundation　excavation.　The　results　show　that　the　high-precision　electronic　detonators　can　significantly　reduce　the　strength　of　blasting　vibration,　combines　with　the　pre-split　blasting　control,　vibration　reduction　effect　is　more　significant.　By　optimizing　the　delay　time,　a　high-frequency　and　low-peak　waveform　may　be　adjusted,　blasting　break　rock　effects　and　harmful　effects　can　be　precise　controlled.