Pt nanoparticles (NPs) supported on wire- and cube- like NaNbO3. A facile hydrothermal route combined with in situ photodeposition method. Nanowire exhibited 25 times higher H2 production than nanocube. Super stability up to 15 h in the process of photocatalytic H2 production. Better distribution of Pt NPs and much stronger interaction of Pt and NaNbO3 nanowire.