The utility model provides a pair of horizontal measuring device of automobile body, include first hose that sets up along the length direction of automobile body and second hose, third hose, fourth hose and the five weaknesses pipe that sets up along vehicle width, wherein first instruction end fixer is established to second hose cover, and third hose cover is established the second and is instructed the end fixer, and fourth hose cover is established the third and is instructed the end fixer, and the five weaknesses pipe box is established the fourth and is instructed the end fixer. Wherein, first instruction end fixer, second are instructed end fixer, third to instruct end fixer and fourth and are instructed the end fixer all to be provided with horizontal scale, instruct the end fixer through each and judge each horizontal degree of instructing end fixer mounted position. The utility model provides a pair of horizontal measuring device of automobile body during adjustment automobile body horizontality, does not need the horizontality of repeated measurement automobile body, has improved the efficiency of adjustment automobile body horizontality.