To provide a method of manufacturing a cleaning device for an automobile manufacturing a cleaning device for an automobile, in which at least one of cleaning bodies is formed into a nearly elliptic cylindrical shape or a nearly polygonal columnar shape, in regard to a cleaning device for an automobile, in which a plurality of cleaning bodies are arranged in series to each other in a cylindrical body.

This method of manufacturing a cleaning device for an automobile includes: a first process for housing a nearly cylindrical cleaning body 121 and a nearly elliptic cylindrical or a nearly polygonal columnar cleaning body 122 and holding materials 131 and 132 provided in the periphery of the cleaning bodies 121 and 122 in series to each other; a second process for fixing an end of the cylindrical body 11; and a third process for reducing the diameter of the cylindrical body 11 in a region thereof corresponding to the holding materials 131 and 132 to follow the shape of the cleaning bodies 121 and 122 by pushing a roller 22 to the periphery of the cylindrical body 11, and relatively rotating the roller 22 around the periphery of the cylindrical body 11 to gradually move to the center of the cylindrical body 11 in the radial direction thereof.