Abstract: The method of packaging an article by folding a sheet-shaped packaging material includes: a determining step of determining a size of the packaging material and a packaging pattern of the packaging material in accordance with information about the article; a packaging material supplying step of performing at least one of selecting and cutting operations on the packaging material so as to match the size determined in the determining step, and then supplying the packaging material; a packaging material working step of forming a score line on the packaging material supplied in the packaging material supplying step in accordance with the packaging pattern determined in the determining step; and a packaging body forming step of conveying and placing the article onto a predetermined position of the packaging material on which the score line has been formed in the packaging material working step, and then folding the packaging material along the score line to form a box-shaped packaging body.