In　order　to　study　the　effect　of　W-Ce　alloy　with　helium　implantation,　W-Ce　alloy　has　been　exposed　to　helium　beams　with　energy　of　45　KeV　and　flux　of　1.5-2.0　x　10(13)　ion/cm(2)　s(-1).　Surface　morphology　has　been　observed　by　scanning　electron　microscope,　the　composition　of　the　samples　is　analyzed　by　energy　dispersive　spectrometer,　and　the　mechanical　property　is　tested　by　nano-hardness　tester.　The　surface　morphology　indicated　the　blister　and　surface　damage　of　tungsten　strongly　depend　on　fluence　and　affected　by　the　element　doping.　Surface　blister　were　observed　for　pure　W　while　no　blister　was　observed　for　W-Ce　alloy.　A　lot　of　pores　caused　by　sputtering　were　observed　on　the　both　types　of　samples.　W-Ce　alloy　showed　better　performance　on　mechanical　property　compared　with　pure　W.　These　results　indicated　that　the　He-Ce-V　complexes　and　fine　second　phase　sediments　in　the　grain　boundary　can　obstruct　the　migration　and　coalescence　of　helium　atoms,　and　obstruct　the　slip　of　grain　boundary　resulting　in　the　improvement　of　mechanical　property.　(C)　2013　Elsevier　B.V.　All　rights　reserved.