This paper presents an analysis of the operating principle and testing requirement of the aero integrated alarm system of a certain type of aircraft. Based on this, a general design of the system testing method is made by integration of modern measure-control technology and the idea of systemic integration. Also, the ATE based on PC/104 bus is designed, simultaneously the system hardware structure and the testing software flow chart are provided. The status in application shows that the system can run stably and reliably, the testing result is accurate and believable.