The purpose of this research is to reduce the effect of UV on shelf life of packaged broccoli in supermarket. Selective anti-light packaging films were prepared using LDPE and UV absorber UV-531 by blending method , which has UV-531 proportion of 0 ,0. 1 ,0. 3 ,and 0. 5 percent respectively. The prepared films and current used LLDPE film in supermarket were used to pack broccoli and exposed under supermarket light for preservation research. The result showed that the transmittance of the LDPE film decreases with increase of UV absorber content. Under room temperature (29+l) ℃ , the preservation effect of the LDPE films with UV absorber for broccoli is better than LLDPE film. The proportion of 0. 3 percent has the best effect, which can protect chlorophyll and water better.