For　measuring　the　internal　unsaturated　soil　under　rainfall　infiltration　migration　characteristics　of　uniform　flow,with　the　help　of　a　transparent　soil　test　technology　to　carry　out　the　indoor　model　test.Using　the　pixel　intensity　of　black　and　white　reference　points　to　correct　the　pixel　intensity　of　free　infiltration　transparent　soil.　And　establish　the　functional　relationship　between　normalized　pixel　intensity　and　saturation　to　analyze　the　characteristics　of　unsaturated　uniform　infiltration　of　transparent　soil　under　different　boundary　conditions.　The　results　show　that　the　saturation　of　unsaturated　transparent　soil　can　be　characterized　by　pixel　intensity,　and　the　uniform　infiltration　process　of　unsaturated　transparent　soil　can　be　simulated.　The　open　system　exhaust　smoothly,　the　closed　system　infiltration　process　is　hindered　by　gas,　its　saturation　is　about　0.8　times　of　the　open　system.　The　saturation　front　appears　after　the　wet　front　reaches　the　boundary　of　the　phreatic　layer,　and　the　saturation　is　slightly　lower　than　that　of　the　open　system.　Pore　pressure　increases　gradually　from　0kPa　when　wet　front　passes　under　ventilation　condition,　and　from　0kPa　when　fluid　permeates　under　Sealing　condition.　The　infiltration　rate　and　cumulative　infiltration　rate　decrease　with　the　increase　of　initial　oil　content　and　decrease　with　the　decrease　of　oil　transport　intensity.　©　2023　Editorial　Board　of　Journal　of　Basic　Science　and.　All　rights　reserved.