The invention discloses a helmet display, which is applied to corona detection. The helmet display comprises an ultraviolet object lens, a solar-blind ultraviolet image intensifier, an ultraviolet optical filter, an optical fiber image transmission beam, an eyepiece and a spectroscope, wherein the ultraviolet object lens is used for picking up an optical signal of corona; the solar-blind ultraviolet image intensifier is connected with the ultraviolet object lens; the ultraviolet object lens is imaged on the detection surface of the solar-blind ultraviolet image intensifier; the ultraviolet optical filter is positioned between the ultraviolet object lens and the solar-blind ultraviolet image intensifier; the spectroscope is connected with the eyepiece; an included angle is formed between the spectroscope and an optical axis of the eyepiece; light reflected by the spectroscope enters human eyes; and a virtual image seen by the human eye and the corona are positioned at the same azimuth. The helmet display can be used for finding the corona phenomenon at night in time and can be worn when a power system is maintained so as to greatly avoid the loss of the power system; and the helmet display has the advantages of high detection efficiency, convenience in carrying, high accuracy and fewer influences from an outside environment.