The　transition　metal　(Fe,　Co,　Ni)-doped　cuprous　oxide　(Cu2O)　nanowire　arrays　on　Cu　mesh　(CM)　(M-Cu2O@CM,　M　=　Fe,　Co,　Ni)　are　successfully　synthesized　for　the　electrocatalytic　CO2　reduction　reaction　(CO2RR)　to　ethylene　(C2H4)　through　the　simple　calcination　and　impregnation-exchange　methods.　Systematic　characterizations　have　demonstrated　that　the　Ni/Co　doping　in　Cu2O@CM　is　conducive　to　stabilizing　the　Cu+　sites　due　to　the　electron　transfer　from　Cu2O　to　Ni/Co,　while　the　Fe　doping　has　the　opposite　effect.　Consequently,　they　show　the　different　electrocatalytic　performances　of　Ni-Cu2O@CM　＞　Co-Cu2O@CM　＞　Cu2O@CM　＞　Fe-Cu2O@CM　for　CO2RR　to　C2H4　in　an　H-cell.　Among　them,　Ni-Cu2O@CM　exhibits　the　similar　to　2.0-fold　faradaic　efficiency　for　C2H4　(58.2　%　vs.　28.7　%)　and　the　similar　to　2.5-fold　current　density　(-37.6　vs.　-15.0　mAcm(-2))　at　-1.1　V　vs.　RHE,　as　compared　with　Cu2O@CM.　Further　experiments　reveal　that　during　the　electrocatalytic　CO2RR,　the　Ni-Cu2O@CM　can　generate　more　*CO,　which　promotes　the　C-C　coupling　reaction.　The　activity　of　Co-Cu2O@CM　is　lower　than　Ni-Cu2O@CM　because　of　the　strong　adsorption　of　*COOH,　while　the　Fe-Cu2O@CM　even　exhibits　a　lower　activity　than　Cu2O@CM.　This　work　provides　an　insight　into　the　effect　of　transition　metal-doped　Cu2O　array　on　the　electrocatalytic　CO2RR　to　C2H4　products.