A method for aligning a calibration device with a vehicle based on a wheel aligner , wherein: the wheel aligner comprises a bracket , at least one image sensor and a computer communicatively connected to the at least one image sensor ; the at least one image sensor comprises at least two first image sensors and at least one second image sensor , the at least two first image sensors are disposed at two ends of the bracket , the at least one second image sensor is disposed in the middle of the bracket ; the method comprises the following steps: controlling, by the computer , the at least two first image sensors to image a vehicle-mounted target on the vehicle , and processing an obtained image to determine a position of the vehicle ; controlling, by the computer , the at least one second image sensor to image a reference target on the calibration device , and processing an obtained image to determine a position of the calibration device , the reference target on the calibration device being disposed on the side of the calibration device facing away from the vehicle and facing the bracket ; and determining, by the computer , an adjusting mode of the calibration device based on the position of the vehicle and the position of the calibration device , so that the calibration device is aligned with the vehicle according to an anticipated position or direction. the wheel aligner comprises a bracket , at least one image sensor and a computer communicatively connected to the at least one image sensor ; the at least one image sensor comprises at least two first image sensors and at least one second image sensor , the at least two first image sensors are disposed at two ends of the bracket , the at least one second image sensor is disposed in the middle of the bracket ; the method comprises the following steps: controlling, by the computer , the at least two first image sensors to image a vehicle-mounted target on the vehicle , and processing an obtained image to determine a position of the vehicle ; controlling, by the computer , the at least one second image sensor to image a reference target on the calibration device , and processing an obtained image to determine a position of the calibration device , the reference target on the calibration device being disposed on the side of the calibration device facing away from the vehicle and facing the bracket ; and determining, by the computer , an adjusting mode of the calibration device based on the position of the vehicle and the position of the calibration device , so that the calibration device is aligned with the vehicle according to an anticipated position or direction. controlling, by the computer , the at least two first image sensors to image a vehicle-mounted target on the vehicle , and processing an obtained image to determine a position of the vehicle ; controlling, by the computer , the at least one second image sensor to image a reference target on the calibration device , and processing an obtained image to determine a position of the calibration device , the reference target on the calibration device being disposed on the side of the calibration device facing away from the vehicle and facing the bracket ; and determining, by the computer , an adjusting mode of the calibration device based on the position of the vehicle and the position of the calibration device , so that the calibration device is aligned with the vehicle according to an anticipated position or direction. <EOS>