Abstract: According to the daily global data sets of pressure,temperature and U-V wind at tropopause during the period from 1948 to 2006,the time-space structure of the global heat budget(Q)and its variance at tropopause were calculated.The results are as follows:① The character of Q is most distinct on the the tropopause breakpoints and on Tibet Plateau,the stronger fluctuation of zonal-average Q presents on the northern hemisphere.② The equatorial heat budget at tropopause is quasi-equilibrium state.The strongest zone of the abrupt change character of Q is above some sea marching with some land.③ The global average atmospheric heat budget is mainly cooling condition.Among 59 years,a most significant inter-decadal character is the descending trend of Q,while the inter-annual character is quasi-biennial oscillation(QBO).④ The positive and negative shows a spatial wave train character vary with the season.The longitudinal gradient of Q is weak in summer,but strong and diversity in winter.⑤ The character of variance of Q is most distinct on the the tropopause breakpoints and its north-south moving and east-west extension vary with the season,the strongest change of Q is in winter.