In　order　to　reveal　the　mechanism　for　the　influence　of　the　snowmelt　infiltration　on　the　non-equilibrium　flow　and　stability　of　residual　slope,　the　instability　reason　of　a　residual　soil　slope　induced　by　snowmelt　in　Fujian　Province　was　analyzed　based　on　the　unsaturated　seepage　model　and　the　non-equilibrium　flow　model.　Then,　the　influence　laws　of　different　diameters,　distances,　bending　ratios　and　the　lengths　of　macropores　on　moisture　field　and　safety　factor　of　the　slope　were　also　obtained　based　on　non-equilibrium　flow　model.　The　results　showed　that　non-equilibrium　flow　had　a　greater　impact　on　the　slope　stability　than　that　of　considering　unsaturated　seepage.　The　theory　of　non-equilibrium　flow　could　be　adopted　to　reasonably　interpret　the　instability　mechanism　of　a　residual　slope　induced　by　the　snowmelt.　With　the　increasing　of　the　macropore　diameter,　the　pore　water　pressure　and　the　moisture　exchange　capacity　between　macropore　domain　and　matrix　domain　would　increase,　but　the　priority　conduction　of　water　flow　and　stability　for　slope　would　decrease;the　conduction　route　of　water　would　be　extended　and　water　accumulation　in　the　macropore　would　be　decreased　with　the　increasing　of　the　length　of　the　macropore.　The　length　of　the　macropore　played　a　certain　part　in　the　safety　factor　of　slope.　The　bending　ratio　of　the　macropore　had　little　influence　on　water　content　and　safety　factor　of　slope.　There　was　a　critical　distance　for　the　macropore　distances　which　could　lead　to　minimum　safety　factor　of　slope.　The　preferential　flow　of　macropores　would　be　restricted　if　the　distance　between　macropores　was　too　large,　and　the　mutual　superposition　of　non-equilibrium　flow　would　decrease　the　pore　water　pressure　in　deep　layer　if　the　distance　between　macropores　was　too　short.　Therefore,　the　influence　of　non-equilibrium　should　be　paid　more　attention　for　the　instability　of　slope　with　macropore　induced　by　snowmelt　in　the　short-term　frozen　zone,　especially　in　the　distance　between　macropores　and　the　length　of　macropore.　©　2017,　Editorial　Department　of　Advanced　Engineering　Sciences.　All　right　reserved.