Currently,　transition　metal　phosphides　(Cu,　Fe,　Co,　and　others)　have　been　identified　as　potential　candidates　for　both　the　oxygen　evolution　reaction　(OER,　anode)　and　hydrogen　evolution　reaction　(HER,　cathode).　One　of　the　copper　based　phosphides　has　shown　efficiency　for　the　HER,　however,　it　displays　greater　theoretical　potential　and　instability　compared　to　noble　metal　materials　in　the　OER　process.　Herein,　Cu-MOF-NH2　nanocubes　were　subjected　to　pyrolysis　treatment　in　a　low　phosphorus　atmosphere　to　produce　highly　dispersed　Cu3P　nanoparticles.　Dispersed　Cu3P　nanoparticles　coated　with　nitrogen-carbon　matrix　composite　layers　provide　numerous　active　sites　and　high　stability.　In　situ　Raman　spectra　confirmed　a　significant　reduction　in　Cu+　oxidation　to　Cu2+.　Furthermore,　according　to　XPS　resolution　results,　the　Cu-P　bond　provides　electrons　to　the　Cu-P-O　bond,　thus　accelerating　the　OER　process.　We　integrated　experimental　electrochemistry　to　verify　the　potential　enhancement　of　the　OER　performance　and　stability　of　Cu3P　using　appropriate　nanostructure　coating　techniques.　The　Cu3P/NC@CF　electrode　was　prepared　by　the　phosphorylation　and　pyrolysis　of　Cu　MOF-NH2.　It　retained　superior　structural　stability　for　the　OER　process　and　served　as　both　anode　and　cathode　for　the　overall　water　splitting　in　1　M　KOH　solution.