At present, domestic civil aviation aircraft has l implemented PED (Portable Electronic Device) startup and internet access restrictions. While this measure provides passengers with a better service experience, there are also potential risks to the operation of onboard aviation electronic devices. In order to better study the electromagnetic interference threat of PED radiation to aviation electronic devices, a design method for a PED simulator is proposed. This simulator can simulate the real scenarios of cabin passengers using electronic devices such as mobile phones and PADs, generate radiation signals identical to those of actual devices, and realize centralized control and management. It eliminates the need for frequent manual operations, making it more convenient to carry out PED interference testing experiments. The simulator has been tested on a domestic civil aviation aircraft. By comparing with the interference data of real PEDs, it is found that the interference generated by the simulator is basically consistent with the real signals. Therefore, this achievement can be widely applied to PED interference testing scenarios of civil aviation aircraft.