The purpose of this research is to develop a verification and test platform for the large civil aircraft air traffic control and surveillance system, to complement the ground traffic control and surveillance data reception and manage under the air-ground data communication environment; meanwhile, according with the current international standards and regional operation regulations on the ATC and surveillance functions, the platform is capable to accomplish the data transmission from the ground ATC system to the onboard systems. The platform works with the onboard datalink-related ATC function and part of the surveillance functions, offers the ground transceiving terminal, and monitors the onboard system data status. The result of this research helps with the onboard system test and troubleshooting during the aircraft development phase, and provides preparation and supports for the system airworthiness verification.