The utility model provides a shielding ring used in an ultra-high-voltage power transmission line, which is applied to a power transmission line comprising a connecting plate and a power transmissionconducting wire. The connecting plate is connected with the power transmission conducting wire through a connecting fitting, the shielding ring is fixed on the power transmission line and used for shielding the connecting fitting, the shielding ring comprises at least two large rings surrounding the power transmission conducting wire, a normal line direction of an annular surface of each large ring is identical to an extending direction of the power transmission conducting wire, the large rings are arranged in parallel, and an interval used for holding the connecting fitting is arranged between the two large rings on the outermost side. The power transmission conducting wire is surrounded by utilizing at least two large rings, thereby shielding the connecting fitting. Particularly, when being applied to a 1000KV ultra-high-voltage power transmission line and compared with an ear-type equalizing shielding ring in the prior art, the shielding ring is easy to be mounted and fixed, can beoperated for a long time, and has a better shielding effect for the connecting fitting on the power transmission conducting wire.