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Diesel engines with good fuel economy and power are widely used in various industries, such as motor vehicles, generator sets, ships and so on. However, particulate matter (PM) emissions from diesel engines have always been a concern. PM can be suspended in the air for a long time, which pollutes the environment and affects human physical and mental health. With the increasingly strict emission standards of diesel engines, diesel particulate trap has become one of the technologies to meet the emission standards of diesel vehicles. Diesel engine particle trap is designed from the function, performance, maintenance and other aspects of consideration, that is, filtration efficiency, differential pressure loss, high temperature resistance, ash corrosion resistance, dust mileage, etc..