The utility model discloses a 1,000kV/220kV UHVAC (Ultra-High Voltage Alternating Current) same-tower four-loop tension support. The tension support comprises a ground wire cross arm, a three-layers of 1,000kV guide wire cross arms and two layers of 220kV guide wire cross arms, wherein the three-layers of 1,000kV guide wire cross arms are arranged above the two layers of 220kV guide wire cross arms, a double-circuit 1,000kV electric transmission line is arranged at the upper part of the tension support, and a double-circuit 220 kV electric transmission line is arranged at the lower part of the tension support, so that the same-tower erection of the 1,000kV electric transmission line and the 220 kV electric transmission line can be realized, line corridor resources can be saved, the erection cost can be reduced, and an entironment can be further protected; furthermore, the three layers of 1,000kV guide wire cross arms are arranged above the two layers of 220kV guide wire cross arms, and the electrical characteristics of different voltage classes of electric transmission lines are used, so that the tower height can be maximally reduced, rolled steel can be saved, and the economical efficiency can be further improved.