Small-aspect-ratio missile horizontal measuring method

The invention discloses a small-aspect-ratio missile horizontal measuring method. After a missile body is leveled the first time, a reference platform serves as the only reference for all measuring points on a missile; a height gauge is used for measuring the heights of all horizontal measuring points to the reference platform, rotation and leveling of the missile body are not needed during the process, and horizontal measuring deviation data are obtained by calculating the height difference between the measuring points. Measuring errors caused by frequent manual leveling operation are reduced, and the missile horizontal measuring precision and efficiency are improved; meanwhile, a missile overturning support and other equipment are reduced, so that operation is convenient, and cost is lowered.