Abstract: Taking precipitation-induced accumulation landslides as the basic research object and containing rainfall and groundwater as the main load-unload parameters, the loadunload response ratio theory is used more and more widely in time prediction of landslides. However, reservoir-type landslides are seldom examined with this theory. For this reason, we propose a forecast model in this article in which reservoir water level is treated as the loadunload parameter and landslide acceleration, as the loadunload response parameter. The above model is used to verify the accuracy by taking a typical reservoir landslide-the Bazimen landslide for example. The results show that the prediction model of load-unload response ratio theory with reservoir water level as the load-unload parameter can accurately predict the time in reservoirtype landslides.