Conveying system and processing system

The present invention provides a transport system capable of carrying in and out a plurality of trays while suppressing the burden of an operator. A transport system (1) is provided with: a first trolley (3) for providing an unloaded pallet; a separation mechanism (5) including a first tray conveyance mechanism (6) that conveys the lowermost empty tray (15A) among the plurality of empty trays (15A) to a first tray placement position (60B); a second tray conveyance mechanism (7) for conveying the unloaded tray (15A) from the first tray mounting position (60B) to the workpiece mounting position (101A); a workpiece transfer mechanism (8) that places the display panel (100) on the no-load tray (15A) conveyed to the workpiece mounting position (101A); a stacking mechanism (9) that includes a third tray conveyance mechanism (10) that conveys the load tray (15B) from the workpiece loading position (101A) to the load tray discharge position (101B), and that stacks the load tray (15B) on a lower layer of the load tray