Abstract: The distribution characteristics of the temperature field and the corresponding horizontal wind field with the advection fog on 18th December,1997 are analyzed,using the relatively dense real time data on time and (normal) space collected by the Dopplar sonic radar. Meanwhile,all the factors in different periods of the temperature inversion's development are calculated and analyzed according to the factors affecting the temperature stratification change. The analysis demonstrates that: (1) The upper temperature inversion which is the subsidence inversion,appears together with the relatively strong deviating north air stream near to its top. The change of the intnsity of temperature inversion and the relatively strong deviating north air stream near to its top are in the same direction. The turbulence cannot develop easily because the upper temperature inversion is under the strong wind shear. Meanwhile,like a lid,it prevents the momentum and heat from transporting downward,which is essential for the ground layer temperature inversion to keep stability. (2) Whether in the maintaining period or in the dramatically weakening period,the normal motion is the main control factor of the temperature inversion's evolution. That the surface's radiation cooling affects on the ground layer temperature inversion is presented as the relatively strong echo peak value corresponding to the temperature variety's valley value.