Bentonite for waterproof and anti-seepage is an ideal waterproof and impermeable material made by using bentonite, a rare non-metallic mineral resource in China, as the main raw material, and refined and processed by special production processes such as mineral processing, sodification, drying and grinding. The appearance is gray-white or yellow powder, mainly used as waterproof and impermeable materials for various engineering foundations. Compared with similar products, bentonite for waterproof and seepage prevention has the characteristics of good water absorption, high expansion rate and strong water insulation effect, and it is a new waterproof material product with good leakage prevention performance and low price.