The dataset is the basic data of the author's paper 'Direction change condition of unsaturated lateral flow and its response to homogeneous and heterogeneous slopes'. The study aimed to investigate the effect of these factors on water infiltration on slopes and to better understand the causes of slope water lateral flow. The study conducted model simulations, investigating scenarios including two rainfall patterns, three soil types, three slope angles, three anisotropy ratios, and three layered slope system control methods.