Diesel fuel filter

A diesel fuel filter (7) has a fuel recirculation passage (5) where a recirculation valve (8) and a one-way valve (9) are provided in a disposition order of the one-way valve (9) and the recirculation valve (8) in a direction of flow of recirculation fuel in the recirculation passage (5). Due to the disposition, blockage of a fuel element (11) by a wax when the fuel temperature is low is prevented.