In view of the increasingly strong demand for civil aircraft auxiliary fuel tank,in order to support its experimental research,a detailed transfer simulation system test bench design scheme was put forward from the aspects of composition,principle,mechanical structure design,and control system design,and the test verification was carried out.The results show that the test bench is fast and accurate in bracket angle control,fuel tank pressure control,and transfer flow control,and all the indicators are superior,which can provide strong technical support for the development of civil aircraft auxiliary fuel tank system.