This product is a sewage interception device that is compatible with rainwater grates. It is specially designed to solve the problem of clogged drainage pipes. It is made of high-strength and environmentally friendly materials and is formed by a single injection molding process. The structure is lightweight yet sturdy, resistant to acid and alkali corrosion, and does not age easily. The hanging frame is equipped with a fine filter net (the mesh size can be customized), which can precisely intercept solid debris such as leaves, plastic bags, sand, and stones washed by rainwater, preventing pipe blockage and clogging, while not affecting the rapid infiltration of rainwater. During installation, it is directly embedded below the rainwater grate without the need to modify the original drainage structure. Cleaning and disassembly only require manual removal. The edge sealing design closely adheres to the inner side of the grate, eliminating the risk of leakage with no debris. It is compatible with various specifications of rainwater grates (supports custom sizes) and is widely used in rainwater outlets of municipal roads, residential areas, squares, parks, commercial complexes, etc. It effectively reduces the maintenance cost of the drainage pipes and helps the efficient operation of the sponge city drainage system. It is a practical and environmentally friendly accessory for improving the cleanliness of rainwater discharge.