<p>Artificial photosynthesis for hydrogen evolution coupled with benzyl alcohol photoreforming faces efficiency challenges due to insufficient charge directional transfer. Here, we report a synergistic strategy integrating the polarization electric field from asymmetric Zn₃In₄S₉ and the interface dipole field induced by MoS₂ to drive fast charge dynamics. The optimized 6%-MoS₂/Zn₃In₄S₉ exhibits notable photocatalytic performance, generating 41.19 mmol g^-1 h^-1 of hydrogen and 43.33 mmol g^-1 h^-1 of benzaldehyde, which is 11.8 to 12.2 times higher than that of Zn₃In₄S₉. Notably, apparent quantum yields reach 36.6% ± 0.7% for hydrogen and 40.0% ± 0.3% for benzaldehyde (3 times), while retaining 93.8% and 87% of initial activity after 30 hours, demonstrating high stability. In this work, we reveal that the intrinsic dipole of Zn₃In₄S₉ generates a polarization electric field, suppressing bulk charge recombination. Concurrently, the MoS₂-induced interface dipole field creates a fast electron transport pathway from Zn₃In₄S₉ to MoS₂.</p>