The invention relates to the technical field of filtering equipment and provides a filter capable of filtering particulate matter. The filter has the regeneration function. According to the main technical scheme, the filter comprises a filtering element, filtering structures and a heating device; the filtering element comprises a first end and a second end which are opposite to each other, the first end is provided with an air inlet hole, and the second end is provided with air outlet holes; the filtering structures comprise first flow guide grooves and second flow guide grooves, the first flow guide grooves are formed in a wall of the air inlet hole, the second flow guide grooves are formed in walls of the air outlet holes, and at least one parts of the first flow guide grooves are opposite to the second flow guide grooves in the direction from the first end to the second end; the part, located on the opposite parts of the first flow guide grooves and the second flow guide grooves in the direction from the first end to the second end, of the filtering element is made of metal fiber felt; the heating device is used for heating the part, made of the metal fiber felt, of the filtering element. The filter can filter particles in motor vehicle exhaust gas.