A special guardrail for a racing track comprises a racing track long guardrail, racing track short guardrails, weighting blocks and a Y-shaped fork head; the racing track long guardrail, the racing track short guardrails and the Y-shaped fork head are connected through gears in an engaged manner to form a racing track guardrail; the Y-shaped fork head is arranged at the forked part of the racing track; the front end of the Y-shaped fork head is connected with the racing track long guardrail in an engaged manner; the fork ends of the Y-shaped fork head are correspondingly connected with the front ends of the two racing track short guardrails in an engaged manner; the tail ends of the racing track short guardrails are connected with the front end of the other racing track long guardrail in an engaged manner; if the racing track guardrail does not form a closed loop, the tail end of the racing track guardrail is connected with a tail end connecting head in an engaged manner; and therefore, the special guardrail for the racing track can be rapidly and integrally combined and can be combined into various shapes; and after a counterweight is additionally mounted, the integral guardrail cannot easily move to be deformed after being collided and has a certain energy absorbing effect.