The invention relates to a method for correcting atmospheric refraction when a radar measures the flight path of a space target. The method is mainly applied to radar precision identification, uses astandard track for identifying a target as a correction reference, and changes a ground vertical reference from an earth's core-to-radar position vector in a traditional method to an earth ellipsoid curvature center-to-radar position vector. Thus, the geocentric distance is replaced by curvature center distance and the earth's core intersection angle is replaced by the curvature center intersection angle so as to improve the refractive correction in the space target measurement. The method considers the non-spherical characteristic of the earth, makes the calculation of the refraction error closer to the physical reality, can be directly applied to the precision identification of the space target measurement radar, improves the error separation level of the precision radar, is used in thefields of space debris environment monitoring, in-orbit service and space situational awareness energy, and improves the space target measuring and tracking ability.