The disclosure provides a fatigue test device and a control system thereof. The control system includes: a PLC, which is connected to a driving mechanism and used for providing a control signal to the driving mechanism and outputting a test result; an interaction module, which is connected to the PLC, and used for receiving an input parameter, outputting the parameter to the PLC and receiving and displaying the test result; and a sensing module, which is connected to the PLC and the fatigue test device, and used for collecting the parameter of a to-be-tested sheet of the fatigue test device and inputting the parameter to the PLC.