To provide a dust and oil recovery bag capable of removing dust and oil, etc., incorporated in discharge water, allowing the cleaned water to flow into a sewerage pipe and being easily exchanged.

An inlet cylinder 3 and an outlet cylinder 4 are provided on the upper part of a bag main body 2 of the trash and oil recovery bag 1, and discharge water from a kitchen is charged into a collection net bag 7 housed in the bag main body 2 via a connection cylinder 5 of the inlet cylinder 3 connected to a water discharge pipe 9 to be attachable and detachable, and after collection of the trash, the oils incorporated in the discharge water flew out from the net bag 7 is soaked into an oil absorption material 8 in a liquid permeable bag 8a housed in the bag main body 2, and the cleaned water is discharged from the outlet cylinder 4 to a discharge pipe 10 connected to the connection cylinder 6 to be attachable and detachable, and is made sanitary and useful to environmental protection, besides the recovery bag 1 can be easily exchanged by attaching and detaching the connection cylinders 5, 6 to/from the water discharge pipe 9 and the discharge pipe 10.