Concrete　pumping　technology　is　widely　used　in　reservoirs,　dams,　harbours　and　other　hydraulic　structures.　To　investigate　the　effects　of　pumping　on　the　flowability,　mechanical　strength　and　frost　resistance　of　hydraulic　concrete,　long-distance　pumping　tests　were　carried　out　on　self-compacting　concrete　(SCC).　This　paper　investigated　the　influence　of　high-pressure　pumping　on　the　workability,　mechanical　strength　and　frost　resistance　of　SCC　by　analysing　the　changes　in　various　properties　of　SCC　before　and　after　long　distance　pumping.　The　flowability　of　the　fresh　concrete　decreased　after　long-distance　pumping.　Compared　to　before　pumping,　the　slump　of　the　four　groups　of　SCC　decreased　by　an　average　of　3.93%　and　the　slump-flow　decreased　by　an　average　of　23.09%.　The　homogeneity　and　stability　of　the　fresh　SCC　improved　significantly　after　pumping.　After　pumping,　the　V-funnel　time　of　SCC　was　reduced　by　an　average　of　82.32%　and　the　segregation　rate　was　reduced　by　an　average　of　125.76%.　Additionally,　there　was　a　slight　increase　in　mechanical　strength　indicated　by　an　average　increase　of　5.87%　in　cubic　compressive　strength,　8.99%　in　axial　compressive　strength,　7.78%　in　tensile　splitting　strength,　and　5.22%　in　modulus　of　elasticity.　Notably,　the　frost　resistance　of　the　SCC　showed　significant　improvement　after　pumping.　Under　non　freeze-thaw　conditions,　the　compressive　strength　of　SCC　after　pumping　increased　by　an　average　of　5.87%.　After　200　freeze-thaw　cycles,　the　compressive　strength　(after　pumping)　increased　by　an　average　of　12.46%.　An　air　void　analyser　was　then　used　to　test　the　air-void　parameters　to　analyse　the　effect　of　long-distance　pumping　action　on　the　air　voids　parameters.　The　study　further　established　the　correlation　between　air-void　structure　characteristics　and　freeze-thaw　resistance.　Under　freeze-thaw　conditions,　the　compressive　strength　showed　a　linear　correlation　with　air　content　and　spacing　factor.　The　process　of　pumping　can　enhance　the　air-void　structure　of　SCC,　leading　to　improved　frost　resistance.　Therefore,　in　the　design　of　concrete　frost　resistance,　pumping　can　be　considered　as　an　influencing　factor　to　improve　the　frost　resistance　of　concrete.