Abstract: It is necessary to detect the atmospheric scattering laser in some situation.Based on the atmospheric model of cities and suburbs,the distribution of the scattering irradiance of 1.06μm laser in the low atmosphere is analyzed and calculated by using Mie's scattering theory.The characteristics of the scattering irradiance distribution are obtained,which are proofed in part.That is,the maximum intensity of aerial scattering laser decreases slowly with the off-axial distance and is inversely proportional to the distance;visibility only affects scattering intensity,instead of the distribution of scattering intensity.The characteristics can provide the theoretical basis and reference for the signal detection of laser scattering.