Single-atom　catalysts　show　excellent　catalytic　performance　because　of　their　coordination　environments　and　electronic　configurations.　However,　controllable　regulation　of　single-atom　permutations　still　faces　challenges.　Herein,　we　demonstrate　that　a　polarization　electric　field　regulates　single　atom　permutations　and　forms　periodic　one-dimensional　Au　single-atom　arrays　on　ferroelectric　Bi4Ti3O12　nanosheets.　The　Au　single-atom　arrays　greatly　lower　the　Gibbs　free　energy　for　CO2　conversion　via　Au-O=C=O-Au　dual-site　adsorption　compared　to　that　for　Au-O=C=O　single-site　adsorption　on　Au　isolated　single　atoms.　Additionally,　the　Au　single-atom　arrays　suppress　the　depolarization　of　Bi4Ti3O12,　so　it　maintains　a　stronger　driving　force　for　separation　and　transfer　of　photogenerated　charges.　Thus,　Bi4Ti3O12　with　Au　single-atom　arrays　exhibit　an　efficient　CO　production　rate　of　34.15　mu　molg(-1)h(-1),　similar　to　18　times　higher　than　that　of　pristine　Bi4Ti3O12.　More　importantly,　the　polarization　electric　field　proves　to　be　a　general　tactic　for　the　syntheses　of　one-dimensional　Pt,　Ag,　Fe,　Co　and　Ni　single-atom　arrays　on　the　Bi4Ti3O12　surface.