Abstract: Ultraviolet photochemical vapor generation (UV-PVG) is a newly green sample introduction technology. It has been successfully used as an interface to combine spectroscopy and mass spectrometry to detect target elements. The method is simple and efficient, with low reagent usage, and can be used for on-site detection. And the UV-PVG also broadens the range of elements of chemical vapor generation, which can be applied not only to hydride generating elements such as As、Hg、Sb、Pb, etc., but also to transition metal elements including Cd, Fe, Co, Ni, Os, and non-metallic elements such as I, Br. The mechanism application scope, advantages and disadvantages, and development trend of UV-PVG were discussed.