The　weak　driving　force　and　rapid　carrier　recombination　severely　restrict　the　development　and　utilization　of　piezocatalysis,　but　the　important　reason　is　the　charge　screening　effect.　Herein,　a　dual　electric　field　driven　piezoelectric　catalytic　system　was　constructed　according　to　deposition　of　Au　nanoparticles　on　the　different　crystal　planes　of　BTO.　Owing　to　the　unmatched　work　function　between　Au　and　BTO,　a　Schottky　junction　at　the　interface　could　be　formed,　resulting　in　a　depletion　region　at　the　BTO　surface　with　a　reduced　charge　density.　Thus,　a　built-in　electric　field　from　the　surface　of　BTO　to　the　inside　is　established　due　to　the　unbalanced　charge　distribution.　In　the　process　of　piezocatalysis,　the　built-in　electric　field　could　assist　the　piezoelectric　field　to　separate　carriers,　which　increases　the　carrier　migration　path,　weakens　the　shielding　effect　and　reduces　the　recombination　of　carrier.　Meanwhile,　Au　could　also　supply　the　active　site　for　the　electron　reduction　reaction.　Under　the　cooperation　of　the　piezoelectric　field　of　BTO　and　Au　nanoparticles,　Au-BTO　achieved　an　elevated　H-2　production　rate　of　194.67　mu　mol　h(-1)　g(-1),　accompanied　by　high-added　H2O2　production.　This　work　provides　a　new　route　for　designing　efficient　piezocatalysts.