Municipal guardrail

The utility model relates to the field of guardrails, in particular to a municipal guardrail, which comprises fixed upright posts, two groups of cross rods and vertical rods, U-shaped blocks are arranged on the inner sides of the fixed upright posts, limit screws are arranged on the U-shaped blocks, the cross rods are slidably arranged in clamping grooves of the U-shaped blocks, the cross rods are symmetrically arranged up and down, insertion holes are arranged on the inner sides of the cross rods at intervals, and the vertical rods are arranged in the insertion holes. A sliding hole is formed in the end of the vertical rod, a spring is arranged at the bottom of the sliding hole, an inserting block is arranged in the sliding hole, a sliding groove communicated with the sliding hole is formed in the side end of the vertical rod, a sliding rod is connected into the inserting block in a threaded mode, the sliding rod is arranged in the sliding groove in a sliding mode, later replacement is facilitated, and the r