Highway guardrail capable of being rapidly installed

The utility model discloses a highway guardrail capable of being installed quickly, which comprises a base, a stand column, a first connecting part and a second connecting part, the base is fixed on the ground, the stand column is fixed at the upper end of the base, a plurality of groups of connecting components are arranged on the stand column, each connecting component is composed of the first connecting part and the second connecting part, and the first connecting part is connected with the second connecting part. The first connecting part and the second connecting part which form the same connecting assembly are fixed to the two sides of the stand columns correspondingly, the first connecting part and the second connecting part on the opposite sides of the adjacent stand columns are connected, each first connecting part is composed of a fixing rod, an anti-loosening nut, a connecting cylinder and a limiting ring, and the fixing rods are horizontally fixed to the side walls of the stand columns; the tail e