The invention relates to a 1100kV high-voltage 11000A high-current lead-out bushing. The 1100kV high-voltage 11000A high-current lead-out bushing includes a center conductor, a shielding flange, a support insulator, a sealing ring, a flange, a grounding shielding component, a middle shielding component, a hollow composite insulator, an upper shielding component and a wiring terminal; after being plated with silver, an end surface of the center conductor is connected with the wiring terminal through a bolt; the grounding shielding component and the middle shielding component are connected together through the support insulator, and thereafter are fixed to the flange. According to the 1100kV high-voltage 11000A high-current lead-out bushing of the invention, a grounding shielding component and middle shielding component-combined uniform electric field distribution mode is adopted, and therefore, an insulation level can be improved; two ends of the center conductor are plated with silver, so that current through-flow capability can be enhanced; and the wiring terminal is shielded by the upper shielding component, so that the corona initial voltage level of the lead-out bushing is improved. With the 1100kV high-voltage 11000A high-current lead-out bushing of the invention adopted, the operation reliability of power transmission equipment can be improved, and the transmission of large-capacity electric power can be improved.