Early screening system and method for peripheral arteriosclerosis

An early screening system and method for peripheral arteriosclerosis. The method comprises the following steps: S1: acquire pulse wave signals from different locations on the body of a patient; S2: perform data pre-processing on a pulse wave signal; S3: perform real-time frequency-domain processing on the pulse wave signal which has undergone data pre-processing, and obtain a continuous three-dimensional waterfall spectrogram and/or a three-dimensional contour grayscale map, and determine whether arteriosclerosis is present in the patient by means of the three-dimensional waterfall spectrogram and/or the three-dimensional contour grayscale map. The pulse wave signal which has undergone data pre-processing is processed by using a cross-correlation processing method to obtain the location of a thrombus in a limb artery of the patient. The early screening method and system for peripheral arteriosclerosis may be used by clinicians to evaluate arterial lesions in the human body, and may be especially used by clinicians to provide a reliable basis for evaluating whether early lesions of arteriosclerosis are present in the human body and whether a thrombus is present in an artery.