A processing apparatus includes: a processing chamber configured to process a workpiece; a moving unit configured to move the workpiece in the processing chamber; a first nozzle; a partition member; an inlet provided in communication with the downstream space; and an outlet provided in communication with the upstream space. The first nozzle has a discharge port configured to discharge a processing liquid or a processing gas. The discharge port is opposed to a moving path of the workpiece and the processing liquid or the processing gas is discharged from the discharge port in a discharge direction directed to an upstream side of a moving direction of the workpiece relative to a direction perpendicular to the moving direction. The partition member partitions a space above the moving path in the processing chamber, and the space is partitioned at a position of the first nozzle into an upstream space on the upstream side of the moving direction and a downstream space on a downstream side of the moving direction.