The invention provides a movable power line bracket rod which comprises a base, a rod body which is fixed above the base, and a bracket which is matched with the rod body, wherein the rod body is a screw rod; the bracket comprises a bolt rotating body which is matched with the screw rod, and wiring supporting feet which are symmetrically fixed on both sides of the bolt rotating body; the rod body is tubular, the inner part of the rod body is a hollow passage of which the top and the bottom are communicated, a rain cap is arranged at the upper end of the rod body, and a gap for supplying the air to horizontally flow is formed between the rain cap and the upper end of the rod body; radial holes are equidistantly formed in the rod body in the axial direction of the rod body from top to bottom, and the radial holes are communicated with the hollow passage and formed in the screw groove bottom of the rod body. The altitude of the movable power line bracket rod can be conveniently adjusted, and the electric leakage risk of the lower surface can be reduced greatly.