The paper puts forward a new thinking of UAV flight safety ground test and evaluation.It elaborates possible and ways of applying the ground test to verify and evaluate the UAV flight safety.On one hand,through combination of UAV airborne equipment fault diagnosis and prediction and comprehensive testing of data link will greatly enhance the ability of UAV flight safety and save test time and cost.On the other hand,Achieving UAV flight safety test and evaluation on the ground extends the concept and general ATS test system which is the combination of various resources and the symbol of the great improvement UAV test and maintenance system.