The invention discloses an ultraviolet (UV) generator and a manufacturing process thereof. The UV generator comprises a cylindrical shell, one end of which is closed; Hg (mercury) and inert gas are filled in the shell; the shell is a ceramic shell; and the opening of the shell is sealed through glass solder. The invention has the advantages that: a transparent polycrystalline alumina ceramic material with high UV transmittance is used as a container and prepared into the shell of the UV generator; because the ceramic material is not softened or deformed and the interior of a metal halogen lamp has no Kr85 gas, the UV generator has no radioactivity, can obtain the UV radiation of enough strength, has compact structure, and can provide more flexibility for the design of a high-strength gas discharge lamp.