Reporters found that ordinary umbrella is not resistant to UV and silver in plastic or vinyl-coated umbrellas are more resistant. But higher-priced vinyl umbrella effect is not as powerful as touted by the merchant, the traditional silver umbrella to shade against the Sun. Three different anti-UV umbrella who? Vinyl material that really do better than ordinary silver umbrellas? To experimentally verify the effect of umbrellas, on May 19, the reporter in fine weather, temperature of 29 degrees centigrade at noon UV tests. Umbrella with no sunscreen, respectively of the test material of ordinary umbrellas (cost 10 Yuan), common silver-coated umbrellas on the market (priced at 15 RMB) and sold black plastic umbrella (at $ 40). According to type, labeled a, b, c respectively. In the test, using a hand-held UV meter. Noon at 1 o'clock, is Sun irradiation strongly of period, through detection at UV strength for 188uW/cm2, UV index for 7 (usually provides, night of UV index for 0, in tropical, and plateau area, sunny no cloud Shi of UV index for 15, UV index more big, said in more short of time in UV on skin of hurt more strong), reporter will a,, and b, and c three species shade umbrella respectively placed in daylight Xia, and through UV measurement instrument for measurement. Reporters found that the measuring probe is placed in a cloth umbrella umbrella beneath, the instrument displays the number as 54uW/cm2, while in b and c under the umbrella shade umbrella, UV measurements are 0uW/cm2. Conclusion vinyl silver Sun-no difference Experiments can be found, no ordinary umbrella UV-resistant material, in light as well as UV penetration. And, vinyl-coated silver umbrella, UV effect is more excellent, UV umbrella can be completely isolated. In addition, the silver and black rubber Sun umbrella protection performance of two materials, does not vary greatly. Therefore, advised in the summer when hot weather travel, effective protection measures.