Coated　conductor　(CCs)　with　large　potential　commercial　value,　which　is　a　promising　candidate　for　wide　HTS　materials　application,　has　been　systematically　studied　for　many　years.　Though　choosing　and　combining　varied　metal　materials,　the　metal　substrate　as　the　essential　part　in　YBa2Cu3O7-x　(YBCO)　multi-layers　structure　has　reached　a　series　of　the　latest　achievements　on　both　fabrication　method　and　the　understanding　of　recrystallization　theory.　The　development　of　different　kinds　of　alloy　substrates　used　in　either　rolling-assistant　biaxially　textured　substrate　technique　or　ion　beam　assistant　deposition　method　was　reviewed.　Furthermore,　from　the　view　of　cost-effect,　several　popular　substrates　were　proposed.