In　order　to　study　the　propagation　characteristics　of　blasting　seismic　waves　by　using　the　analysis　and　research　of　blasting　vibration　monitoring　data　of　Urumqi　subway　tunnel　excavation,　the　blasting　vibration　signal　has　been　decomposed　into　several　IMF　components　by　EEMD　decomposition　and　fractal　theory　has　been　used　to　calculate　the　correlation　dimension　in　this　paper.　The　results　show　that　the　IMF　component　can　reveal　the　frequency　characteristics　in　the　blasting　vibration　signal　clearly.　As　the　measuring　point　is　far　away　from　the　explosion　source,　the　complexity　of　the　frequency　component　of　the　vibration　signal　gradually　decreases.　The　seismic　wave　interacts　with　the　rock　and　soil　medium　in　the　propagation　process,　make　it　shown　non-linear　characteristics,　which　are　not　easily　to　be　observed　by　conventional　measure　methods.　This　paper　introduces　fractal　dimension　to　study　the　nonlinear　characteristics　of　blasting　vibration　signals　and　achieves　the　purpose　of　analysing　the　law　of　blasting　seismic　wave　propagation.　This　study　achieves　a　quantitative　description　of　the　effects　of　site　media　on　seismic　waves,　and　at　the　same　time,　it　lays　a　theoretical　foundation　for　predicting　the　vibration　effect　analysis　of　seismic　waves　reaching　the　target　position.