To provide a DPF device capable of saving the energy to be supplied from the outside when regenerating a filter and capable of reducing the power for regenerating the filter by accumulating the heat energy of the exhaust gas of an engine and the heat energy generated by the combustion of PM when regenerating the filter and utilizing these accumulated energy.

In this DPF device 1 having plural filter units 10A and 10B, exhaust gas passages to the filter units 10A and 10B are switched each other, and the particulate in the exhaust gas of an internal combustion engine loaded on a vehicle is caught, and filters 12A and 12B inside the filter units 10A and 10B are regenerated. Heat accumulators 30A and 30B having heat radiating surfaces 31A and 31B facing to the filters 12A and 12B are arranged in this DPF device 1.