In　order　to　reveal　the　water　transport　characteristics　of　non-equilibrium　flow　on　soil　column　with　macropore　under　heavy　rainfall　condition,　the　influence　law　of　the　factors(i.e.,　rainfall　intensity,　duration　time,　initial　water　content,　the　equivalent　diffusion　distance　between　two　domain,　empirical　parameter)　on　the　seepage　mechanism　of　non-equilibrium　flow　were　analyzed　by　using　the　dual　porosity　model　and　the　kinematic　wave　model.　The　results　indicate　that　the　larger　peak　and　smaller　depth　range　of　water　exchange　calculated　by　dual　porosity　are　larger　than　those　calculated　by　using　the　kinematic　wave　model.　The　dual　porosity　model　is　more　suitable　for　simulating　water　change　of　upper　soil　while　the　kinematic　wave　model　is　more　suitable　for　simulating　water　change　of　bottom　soil.　The　volumetric　water　content　calculated　by　using　the　two　models　along　the　depth　presents　the　characteristics　of　double　knees.　The　depth　of　water　exchange　and　wetting　front　will　increase　with　the　increases　of　rainfall　intensity　and　duration　time.　With　the　initial　water　content　gradually　approaching　to　saturation　water　content,　the　wetting　front　moves　down　and　the　depth　range　of　water　exchange　increases,　but　the　peak　of　water　exchange　decreases　quickly.　With　the　equivalent　diffusion　distance　increaseing,　the　water　exchange　rate　significantly　reduces,　resulting　in　the　non-equilibrium　flow.　There　is　a　little　change　in　wetting　front,　water　exchange　rate　and　water　content　of　the　matrix　domain　when　the　equivalent　diffusion　distance　between　two　domains　is　longer　than　5　cm.　With　the　increase　of　empirical　parameters　(rw　and　n*),　the　wetting　front　moves　down,　but　the　water　exchange　rate　increases.　When　the　rw　is　more　than　0.4　or　n*　is　more　than　2.5,　the　wetting　front　decline　rate,　the　moisture　content　of　soil＇s　profile,　and　the　speed　and　variation　range　of　water　exchange　slow　down　obviously,　resulting　in　the　lower　risk　of　non-equilibrium　flow.　©　2017,　Editorial　Department　of　Journal　of　Tongji　University.　All　right　reserved.