The supermolecular structure and mechanical properties of a matrix fiber were investigated with differential scanning calorimetry, wide-angle X-ray diffraction, sonic velocity instrumentation, and fiber electronic serimetry. The results indicated that the apparent crystallinity of the matrix fiber, the crystallinity of the polypropylene (PP) component, and the mechanical properties of the matrix fiber were all affected by ethylene vinyl acetate (EVA). Drawing increased the orientation and tensile strength of the matrix fiber at the proper temperature and ratio of PP to EVA. The matrix fiber, having good mechanical properties, was placed in a fragrance-alcohol solution or an essential oil for the preparation of a fragrant fiber. The fragrance property of the fiber was determined with generally a method using slow release time as a certain standard, and the results showed that the fragrance property of the fiber was good. (C) Wiley Periodicals, Inc.