Method and device of analyzing abnormal sounds of automobile

The disclosure relates to a method and a device of analyzing abnormal sounds of an automobile, and belongs to the technical field of automobiles. The method includes: creating a target three-dimensional-model of components; determining a first target area and a second target area, determining a first reference line in the first target area, and determining a second reference line in the second target area; selecting multiple collision node pairs in the first target area, and selecting multiple friction node pairs in the second target area; under a condition of vibration of preset frequency, outputting a time-varying collision relationship graph of a distance which is of two nodes in each collision node pair, in a direction which is perpendicular to the first reference line, and within a preset time period, and a time-varying friction relationship graph of a distance which is of two nodes in each friction node pair, in a direction which is parallel to the second reference line, and within the preset time perio