The method of adding fragrance into polypropylene film was studied. With commercially available polypropylene films and flavor as raw materials, using fragrance molecular diffusion and volatilization with the property of expansion with heat and contract with cold of plastic packaging film, the flavor molecules diffuse into interspace of plastic packaging film. By this way, fragrance polypropylene packaging film was got. The effect of the flavor content on the mechanical properties of polypropylene film and transmittance were discussed. The influence of heating temperature and time on the film fragrance were analyzed, the fragrance maintenance time of the film was estimated. The results showed that it had little influence on the mechanical properties and transmittance of polypropylene film when a little flavor was added; the heating temperature and heating time have a greater effect on the persistence of the flavor of the film. The ideal heating temperature and time were at 100 ℃ and 1h. Under these conditions, the fragrance of polypropylene flavored films can last for one year at least.