Abstract:Using the theoretical relationship satisfied by atmospheric parameters between two points in the ray path, the influence of the atmosphere layer to astronomical atmospheric refraction was obtained. It not only considered the contribution of electronic displacement polarization of the dry air to astronomical atmospheric refraction, but also considered contribution of electronic displacement polarization and dipole steering polarization of water vapor. The integral representation is given, it does not depend on atmospheric distribution models, and it could adapte the calculation of different directions and meet the demand for highprecision.