Gelview is a kind of new nucleic acid dye, when use agarose gel electrophoresis to detect DNA, Gelview and nucleic acid binding to produce strong fluorescence signal, its sensitivity is higher than EB, its usage is identical to EB. The ethidium bromide (EB) is a strong carcinogen, has the very big harm to the human body, while the Gelview test didn’t find to be carcinogenic, so instead of EB is a good choice. In the UV light transmission, double stranded DNA showed extremely bright green fluorescence. And Gelview can also be used to dye RNA.