A　novel　carbon　nanotubes/porous-network　carbon　micron　tubes/silk　fibroin　(CPS)　composite　film　neural　electrode　was　presented　and　characterized.　This　electrode　was　fabricated　through　assembling　dispersed　carbon　nanotubes　(CNTs)　by　phytic　acid　onto　the　porous　silk　fibroin　film.　Afterward,　the　silk　fibroin　around　the　CNTs　was　carbonized　by　laser　irradiation,　producing　porous-network　carbon　microtubes　with　good　conductivity　and　biological　compatibility.　The　structure　of　the　CPS　composite　film　was　characterized　by　scanning　electron　microscopy　and　Raman　spectroscopy.　Cyclic　voltammetry,　electrochemical　impedance　spectroscopy,　and　safe　charge　injection　limit　(Q(inj))　of　the　CPS　electrode　were　also　measured　by　the　three-electrode　system,　and　the　results　exhibited　outstanding　electrochemical　properties　with　the　achieved　Q(inj)　of　5.7　mC/cm(2).　This　work　provides　a　promising　approach　for　the　preparation　of　a　long-term　implanted　neural　electrode　with　high　charge　injection　ability　and　good　biocompatibility.