The invention provides a current transformer having a high voltage standard capacitor function. The current transformer is a sulfur hexafluoride (LVQB) inverted current transformer, a secondary coil shielding cover of the LVQB inverted current transformer is divided into an inner shielding cover and an outer shielding cover, the inner shielding cover and the outer shielding cover are connected by an insulation pad, grounding leads are arranged on both of the inner shielding cover and the outer shielding cover, and distributed capacitors between the secondary coil shielding cover and a primary conductive rod of the LVQB current transformer form the high voltage standard capacitor. Compared with the prior art, the current transformer having the high voltage standard capacitor function, provided by the invention, has the advantages that modification design is achieved by a high voltage end of a running device, and the insulation risk of a high voltage standard device accessed to a power grid by a conventional method is prevented.