Guardrail of reversible lane

The utility model provides a guardrail of a reversible lane. The guardrail comprises a lane guardrail 6, a screw rod 5 is arranged in the lane guardrail 6, a square base 8 is arranged at the bottom of the lane guardrail 6, the screw rod 5 penetrates the square base 8 to be connected with a motor 7, the lane guardrail 6 and the square base 8 are arranged in the square rail 4, and the motor 7 drives the screw rod 5 to rotate so as to drive the square base 8 and the lane guardrail 6. During use, the guardrail is integrally embedded underground with the top flush with the ground. When a lane to be reversed, the motor 7 is started to drive the square base 8 and the lane guardrail 6 to rise to the required height, and the lane can be changed. The guardrail can be controlled to rise during lane changing of city roads and is simple in operation and high in efficiency, and road resources are sufficiently utilized. The guardrail of the reversible lane is simple in structure and not easy to damage, and is more costing saving and environment friendly as compared with sun-scorched and rain-drenched mobile road guardrails requiring frequently replacement.