Abstract: This study analyzed the temperature data in the course of 29 mixed fog, haze weather in 2015 from L-band sounding radar at the Zhangqiu sounding station and temperature data from the German 14-channel RPG-HATPRO-G3 microwave radiometer located at the Shandong Meteorological Bureau. The quality analysis of these observation data was performed to determine their accuracy and reliability. In particularly, the macro physical characteristics and diurnal variation of the physical parameters in haze weather were analyzed. The changes of PM_2.5, PM₁₀, SO₂, NO₂, O₃, CO in the atmosphere were analyzed for each case of fog, haze, and haze .The changes of relative humidity, liquid water path, and water vapor content were analyzed. The results indicate that data from the two observation instruments have good consistency, with a goodness of fit higher than 0.97 under fog and haze conditions. There are seasonal variations in the surface inversion layer and some differences in the physical parameters of the overhanging inversion layer. The changes in the temperature inversion layer and pollution parameters are closely related to the formation of fog and haze. Different weather backgrounds are determined to have considerable influence on the physical atmospheric parameters, with obvious fluctuations in the PM₁₀, AQI (air quality index), and CO values, which peak during the same time period. The CO peak in fog and haze weather is particularly obvious, CO peak with a gradual increase from the morning to night. The CO peak of the fog and haze days is smaller, and fog and haze weathers are obviously larger than the fog or haze.