Hydraulic　fracturing　operations　possess　the　capacity　to　induce　the　reactivation　of　faults,　increasing　the　risk　of　fault　slip　and　seismic　activity.　In　this　study,　a　coupled　poroelastic　model　is　established　to　characterize　the　distribution　and　movement　of　fluids　within　rock　formations　in　the　Shangluo　region　of　Sichuan　province,　China.　The　effect　of　hydraulic　fracturing　projects　on　the　variations　of　pore　pressure　and　Coulomb　effective　stress　within　a　high-permeability　fault　is　analyzed.　The　potential　fault-slip　mechanism　is　investigated.　The　results　show　that　the　fault　plays　different　roles　for　fluid　movement,　including　the　barrier,　fluid　transport　channel,　and　diversion　channel,　which　is　related　to　injection-production　schemes.　In　addition,　fluid　injection　leads　to　a　high　probability　of　fault　reactivation.　We　find　that　increasing　the　injection　time　and　fluid　injection　rate　can　result　in　larger　slip　distances.　The　injection　production　scenarios　influence　the　fault-slip　mechanism,　resulting　in　a　normal　fault　or　reverse　fault.　However,　the　arrangement　of　production　wells　around　the　injection　can　effectively　reduce　the　risk　of　fault　reactivation.