ZnSn(OH)₆ cubes with the hollow structure of 250 nm in size were prepared by hydrothermal method with zinc acetate , Na₂SnO₃ and ammonium fluoride as raw materials using NH₄F etching. The crystal structure, morphology, and optical properties of ZnS(OH)₆ were characterized by X-ray diffraction (XRD), infrared spectroscopy (FTIR), Raman spectroscopy (Raman), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and Photoluminescence (PL). The photocatalytic properties of ZnSn(OH)₆ prepared at different hydrothermal reaction duration were investigated by degrading methylene blue (MB). It was found that ZnSn(OH)₆ prepared by hydrothermal treatment for 2 h had a complete hollow structure, and its degradation efficiency of methyl blue (MB) was 97.4 % in 150 min under visible light. The hollow ZnSn(OH)₆ cubic photocatalytic material is a promising photocatalytic material for visible light degradation.