Here,　the　molecule-modified　Cu-based　array　is　first　constructed　as　the　self-supporting　tandem　catalyst　for　electrocatalytic　CO2　reduction　reaction　(CO2RR)　to　C-2　products.　The　modification　of　cuprous　oxide　nanowire　array　on　copper　mesh　(Cu2O@CM)　with　cobalt(II)　tetraphenylporphyrin　(CoTPP)　molecules　is　achieved　via　a　simple　liquid　phase　method.　The　systematical　characterizations　confirm　that　the　formation　of　axial　coordinated　Co-O-Cu　bond　between　Cu2O　and　CoTPP　can　significantly　promote　the　dispersion　of　CoTPP　molecules　on　Cu2O　and　the　electrical　properties　of　CoTPP-Cu2O@CM　heterojunction　array.　Consequently,　as　compared　to　Cu2O@CM　array,　the　optimized　CoTPP-Cu2O@CM　sample　as　electrocatalyst　can　realize　the　2.08-fold　C-2　Faraday　efficiency　(73.2%　vs　35.2%)　and　the　2.54-fold　current　density　(-52.9　vs　-20.8　mA　cm(-2))　at　-1.1　V　versus　RHE　in　an　H-cell.　The　comprehensive　performance　is　superior　to　most　of　the　reported　Cu-based　materials　in　the　H-cell.　Further　study　reveals　that　the　CoTPP　adsorption　on　Cu2O　can　restrain　the　hydrogen　evolution　reaction,　improve　the　coverage　of　*CO　intermediate,　and　maintain　the　existence　of　Cu(I)　at　low　potential.