Highly efficient visible-light-driven WO3/Fe2(WO4)3!10.7H2O porous microplates have been first time fabricated by simple one-step hydrothermal method using sodium tungstate and iron chloride as precursors. The photocatalyst was characterized by employing X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), UV-VIS absorption, photoluminescence (PL), and Fourier transform infrared (FTIR). From the FESEM and TEM analysis, the size of as-prepared porous microplates was estimated ca. 2 µm. The as-prepared sample maintained a high specific surface area (96.906 m2/g) and showed remarkably high photocatalytic performance (k=0.06771 min-1) for the degradation of methyl orange (MO) under visible light irradiation. The improved performance of the product was found to be 3.3 times greater than pure WO3 and about 6.7 times greater than that of P25 TiO2. The enhanced optical absorption in the visible region, large specific surface area, suitable band position and efficient separation of photogenerated electron-hole pairs at the heterojunction interface between two materials were the key factors involved in the enhancement of photocatalytic activity.