The purpose of this study was to Analysis of Inversion Indicators of Boundary layer in Shiraz. In this regard, radiosond data was provided at 3.5 local time in the 1380-1394 solar. Then, the height of the meteorological station in Shiraz (1491 m above sea level) was determined as the base of the inertia of the boundary layer of the air and the boundary layer was up to the surface of the geopotential of 700 hp (an average of 1.5 km from the lower layer of air above ground) Selected as the study space. The results showed that October and November are the highest and July's low frequency of inversion days. On this basis, the autumn, winter, spring and summer seasons were the most days of inversion, respectively. After determining the inversion days frequency, thickness, gradient, adiabatic and inversion intensity were calculated in each day. The results showed that October and November are the highest and the lowest of the days of inversion in July. On this basis, autumn, winter, spring and summer were respectively the most invasive days, respectively. The highest inversion gradient occurs in September and the lowest in January. The highest lapse rate is in March and the lowest is in July. This feature is in consonant with the fact that cold weather is more intense than warm weather. At the end, of months were classified according to the inversion intensity. The results showed that the strongest inversions in the January and the lowest in the July occur.