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The energy of the earth comes from the solar radiation, and the solar radiation has a potential impact on the atmospheric boundary layer. During the solar eclipse, the solar disk is covered by the moon and the solar radiation is reduced to reach the earth. Therefore, the atmospheric thermodynamics is changed, and it provides a good opportunity for us to study the variation of atmospheric thermodynamics. On June 21, 2020, an annular eclipse occurred in China and the partial solar eclipse can be seen except for the annular eclipse region. In this paper, in order to study the effect of the solar eclipse for the atmospheric thermodynamical in the boundary layer, the atmospheric temperature and humidity profiles observed by the ground-based multi-channel microwave radiometer were analyzed with in Xi’an, Zunyi, Nanning and Yibin, and the variation of thermodynamics was studied in different altitudes and weather conditions during the solar eclipse. The results shown that the temperature and humidity of the boundary layer had obviously change. From the beginning of the solar eclipse to the maximum of the solar eclipse, the temperature of the boundary layer began to decrease because of the solar radiation reaching the earth is reduced. During the period from the maximum solar eclipse to the end of the solar eclipse, the radiation energy from the sun to the earth gradually increased, and the temperature of the boundary layer begins to rise and the variation of relative humidity is opposite, the maximum variation of the temperature is more than 3 ℃, and the relative humidity is more than 10% in these stations. The variation of the temperature and humidity lagged behind about 15 to 20 minutes. The effect of the solar eclipse decreases with the increase of height for the temperature and humidity in the boundary layer. In the process of the solar eclipse, the more the solar disk is covered by the moon, the effect of solar eclipse is more obvious for the temperature and humidity in the boundary layer. When it"s cloudy or rainy, the influence of solar eclipse will be weakened for the atmospheric temperature and humidity in the boundary layer.