The embodiment of the invention discloses a detection method, device and equipment for safety line magnetic features. The method comprises the steps: obtaining the start position information and end position information of each feature region in a target magnetic waveform, wherein the feature region is a peak region or a valley region; determining the central position information corresponding to each feature region according to the start position information and end position information of each feature region; calculating the interval between the adjacent feature regions according to the central position information corresponding to each feature region; carrying out the matching of the calculated interval between the adjacent feature regions with the standard interval, and obtaining a matching result. The method provided by the invention can improve the detection of magnetic features of a safety line of paper money.