Ultraviolet (UV) corona inspector is used to detect corona according to the ultraviolet radiation of the discharge. High detecting sensitivity of the inspector requires high ultraviolet transmission property of the detecting window. In this paper, high performance JGS-1 (type name of glass) ultraviolet quartz glass is used as the inspector detecting window material and the ultraviolet transmission characteristics of the glass is studied. A new method with the smart corona detecting module to test the ultraviolet transmission parameter of quartz glass is demonstrated. The comparison results of UV spectrometer and this new method manifest that JGS-1 quartz glass has good ultraviolet transmission character and the new test method with corona detecting module is direct and feasible.