The　fracturing　fluid　with　solid　particles　in　the　process　of　high-speed　injects　to　high　pressure　pipe　manifolds　will　cause　serious　erosion　damage,　lead　to　serious　material　loss　and　equipment　failure.　In　this　paper　,experimental　study　on　the　main　factors　affecting　erosion　rate　of　alloy　steel　materials　for　high-pressure　pipe　and　tee　as　impact　angles　and　impact　velocity　by　new　erosive　wear　test　machine.　The　erosion　rate　model　was　established　based　on　the　erosion　theory　and　the　results　of　erosion　experiment.　Computational　fluid　dynamics　(CFD)　analysis　has　been　used　to　predict　erosion　behavior　in　high　pressure　pipe　and　tee　geometries　that　are　highly　susceptible　to　erosion　in　the　process　of　fracturing　operation.　With　standard　k-Ε　turbulence,　discrete　phase　and　erosion　model,　the　erosion　wear　rate　on　the　inner　wall　and　velocity　characteristic　in　straight　pipe　and　tee　were　obtained.　The　results　show　that　downstream　triplet　and　dorsal　competent　near　branch　place　are　easy　to　wear.　The　study　is　expected　to　provide　reference　for　high-pressure　pipeline　defect　detecting　and　optimization　design.　©　ASCE　2013.