Low-temperature　high-efficiency　catalysts　are　key　for　complete　methane　oxidation,　whereas　common　perovskite　catalysts　still　have　much　room　to　improve.　Herein,　a　unique　La-Co-C-O　hybrid　(phase　composition　of　La2O2CO3/　LaCoO3/Co3O4)　was　successfully　synthesized　via　an　amino　acid-deep　eutectic　solvent/LaCoO3　mutualism　system.　The　C-O　bond　connects　each　phase　and　decreases　the　bond　energy　of　active　Co-O,　as　well　as　a　higher　Co　valence　state　and　lattice　oxygen　content　in　the　hybrid.　The　light-off　temperature　of　the　hybrid　for　complete　methane　oxidation　is　366　degrees　C,　which　is　112　degrees　C　lower　than　the　light-off　temperature　of　LaCoO3.　The　high　conversion　rate　remains　in　the　presence　of　water　vapour　or　long-term　reactions.　Such　excellent　catalytic　performance　of　the　hybrid　can　be　attributed　to　the　broad　path　of　methane　adsorption　and　C-H　cleavage　on　acid-basic　sites.　This　work　hence　provides　a　facile　process　to　tailor　highly　active　catalysts　for　complete　methane　oxidation.