The invention discloses a real-time closed-loop test system for an aircraft automatic control system. A test board is called according to a test model from an embedded controller provided with a real-time operating system so as to perform a test, and at the same time, a test result is recorded, and therefore, the closed-loop dynamic test of an aircraft automatic control system under test is realized, and the high real-time requirements of the closed-loop test of the aircraft automatic control system can be satisfied; and the test models and test data of aircraft automatic control systems of different types are stored and managed by a main control computer, and therefore, the unified management of the test data of the various aircraft automatic control systems can be realized, and the universality of the test system can be improved; a test process analysis system is introduced, and therefore, optical excitation information can be selected for the test, the speed and accuracy of the testcan be improved, and the loss of the aircraft automatic control system under test can be reduced.