The invention discloses A laser warning recording apparatus for steering of a long axle vehicle which includes a horizontally mounted laser support bar, A mounting plate is integrally arranged in themiddle of the laser support rod, the mounting plate is fixedly installed on the lower surface of the chassis of the long-axis vehicle body, the two ends of the laser supporting rod are fixedly installed with laser heads, the two laser heads are symmetrically on both sides of the long-axis vehicle body, the two laser heads are respectively located on the front sides of the two rear wheels of the long-axis vehicle body, and the laser projection directions of the two laser heads are downward arranged; The invention has simple structure, the long axle car can project warning line to the ground inthe process of steering or reversing at night, and the bending degree of the warning line can be changed through the left and right displacement lenses, thereby changing the warning range, playing a warning role to the pedestrians on the roadside, and further preventing pedestrians from being injured by running.