The invention relates to an air source system test bed. The test bed comprises an air source displacement test portion and a computer measurement and control portion. The air source displacement testportion comprises a gas circuit simulation group located on the upstream and a nozzle module located at the downstream of an air flow direction. The gas circuit simulation group and the nozzle moduleare connected through a circuit with at least one quick-plug connector, and any two quick-plug connectors can communicate through a pipeline; and the computer measurement and control portion is connected with the gas circuit simulation group and the nozzle module through circuits, and the computer measurement and control portion can measure and automatically collect test data.