The　metallic　Ni-5　at.%　W　(Ni5W)　substrate　with　sharp　cube　texture　is　found　as　one　of　the　promising　candidates　used　for　fabrication　of　coated　conductors.　However,　the　alternating　current　(AC)　loss,　partly　contributed　by　the　ferromagnetic　Ni5W　substrate　is　unavoidable.　In　this　work,　we　analyzed　the　evolution　of　magnetic　properties　of　Ni5W　substrates　via　the　cube　texture　development.　The　results　revealed　that　the　cube　texture　has　an　important　impact　related　to　size　advantage　during　recrystallization,　leading　towards　the　consumption　of　the　deformation　and　other　orientational　grains,　and　hence　giving　rise　to　form　a　sharp　cube　texture.　Increasing　the　annealing　temperature,　the　grain　size　is　found　to　be　increased.　In　the　fully　developed　cube-textured　substrate,　the　grain　boundary　was　replaced　by　small　angle　grain　boundaries　(SAGBs).　Also　the　magnetic　domain　structure　was　transformed　from　180　degrees-structure　to　a　branched　one　with　the　increasing　annealing　temperature.　This　transformation　is　dependent　on　the　increase　of　grain　size,　particularly,　the　SAGBs　plays　an　important　role　in　the　formation　of　perfect　domain　structure.　Increased　coercivity　and　hysteresis　loss　in　the　fully　textured　substrate　can　be　attributed　towards　the　ideal　cube　texture　and　perfect　complex　domain　structure.　Therefore,　a　potential　solution　has　been　proposed　to　resolve　this　limitation　of　the　sharp　cube　texture　and　increased　hysteresis　loss　in　Ni5W　substrates.