Fault state information processing method, analog front-end simulator and test system

The invention discloses a fault state information processing method, an analog front-end simulator and a test system, and the method comprises the steps: receiving the first state information of each equalization circuit in a first equalization circuit set sent by a terminal device, the first equalization circuit set being included in a second equalization circuit set simulated by the analog front-end simulator; determining second state information of each equalization circuit in the second equalization circuit set; and sending the second state information of each equalization circuit in the second equalization circuit set to the battery management unit, so that the battery management unit determines and sends equalization circuit fault information to the terminal equipment, and the terminal equipment determines an equalization fault test result of the battery management unit according to the equalization circuit fault information. According to the invention, the test efficiency of testing the equalization fault function of the battery management unit can be improved, and the test cost of testing the equalization fault function of the battery management unit can be reduced.