In this study,based on the daily temperature dataset from ERA-Interim analysis during 1979-2014,and according to the temperature lapse rate interpolation method,the tropopause pressure over the Tibetan Plateau and other regions in the same latitudes are calculated.First,the seasonal variation and long-term trends of the tropical tropopause pressure over the Tibetan Plateau,in comparison to those over other regions in the same latitudes,are discussed.Next,the relationships between the tropical tropopause pressure and upper air temperature are preliminary addressed.The results of the study are as follows:1)In terms of seasonal change,with the exceptions of December and January,the tropical tropopause pressure over the Tibetan Plateau is lower than that over other regions in the same latitudes in each month.In addition,compared with other regions in the same latitudes,the single structure of the tropical tropopause pressure,mean temperature in the upper troposphere,and mean temperature in the lower stratosphere over the Tibetan Plateau are shown to be more distinct.2)The tropical tropopause pressure the Tibetan Plateau and other regions in the same latitudes display a close relation with the upper air temperature,i.e.when the mean temperature in the upper troposphere (in the lower stratosphere) increases (decreases),the tropical tropopause pressure decreases.Furthermore,the tropical tropopause pressure the Tibetan Plateau is more closely linked with the mean temperature in the upper troposphere than that over other regions in the same latitudes.3)From 1979 to 2014,both the tropical tropopause pressure of the Tibetan Plateau and non-plateau regions decreased with time during each month,especially in spring and winter.Meanwhile,compared with the other regions in the same latitudes,the upward (downward) trends of the mean temperature in the upper (lower) troposphere of the Tibetan Plateau were faster all year round,which led to a more rapid tropical tropopause pressure decline on the Tibetan Plateau.