Most　reported　3D　electrodes　currently　lack　a　macroscopically　ordered　porous　structure,　hindering　transport　efficiency　optimization　and　reducing　the　utilization　of　active　materials　and　the　surface　area　of　the　electrodes.　In　this　study,　a　micro-　and　macroscopic　hierarchical　porous　titanium　alloy　electrode　modified　with　Pt　nanoparticles　(Pt/TNTs@3D-TC4)　was　created　using　electron　beam　melting　(EBM)　technology,　anodic　oxidation,　and　a　water　bath　method.　The　micrometer-scale　network　structure　enhanced　electrolyte　diffusion　and　bubble　removal,　whereas　the　surface　nanostructures　provided　numerous　anchoring　sites　for　Pt　nanoparticles.　This　unique　micro-　nano　structure　offers　a　large　specific　surface　area　and　efficient　mass　transport,　resulting　in　excellent　acidic　HER　performance　and　stability　at　industrial　current　densities.　X-ray　photoelectron　spectroscopy　(XPS)　and　X-ray　adsorption　fine　structure　(XAFS)　analyses　confirmed　an　electronic　metal-support　interaction　(EMSI)　between　Pt　and　TiO2　nanotubes　(TNTs),　with　Pt　nanoparticles　anchored　via　Pt-O-Ti　bonds.　The　electrode　achieved　the　overpotential　of　42　mV　at-10　mA　cm-　2,　and　267　and　378　mV　at-0.5　A　cm-　2　and　1　A　cm-　2,　respectively.　Exceptional　stability　was　demonstrated,　without　significant　deactivation　after　120　h　at　0.5　A　cm-　2.　This　study　offers　a　novel　strategy　in　the　industrial　application　of　high-performance　electrodes　for　electrochemical　energy　conversion.