Disclosed are a method of an automated test display unit and a system thereof. The method includes the following steps: at least one test module is compiled according to prearranged regulation and thetest module is stored in the memory cell of the test system which comprises an execution unit and a memory cell; then the test system is electrically connected to a display unit to be tested; at last, the execution unit of the test system executes the main program so as to read the appointed test module from the memory cell, translates the test module into a plurality of test signals and transmits the signals to the display unit.