The invention relates to a landslide space-time prediction method. A landslide catastrophe process of a research position is subjected to space-time prediction by combining a physical conception-based hydrological model and a Bishop slope stability analysis method, and the landslide space-time prediction method is a landslide prewarning and forecasting method which combines soil mechanics, hydraulics and computer numerical simulation. The landslide prediction method has the advantages that a landslide deterministic model and the physical conception-based hydrological model are integrated effectively, the space-time distribution laws of the basin slope stability under the action of rainfall and the qualitative and quantitative relationship of the space-time distribution laws are analyzed, and the basin landslide is analyzed and predicted rapidly and effectively. By adopting the Bishop slope stability analysis method and simultaneously considering the spatial distribution difference in water content of soil mass, the precision and the applicability of the model are improved. The landslide prediction method provided by the invention is suitable for the landslide prediction of a simple side slope, a complex side slope and a basin scale.