Through using the aerological data of August-September,1982,the energy exchange and its oscillation between the eastern and western monsoon regions in Asia are calculated and analyzed. It is found that various kinds of energy are transported from the plateau monsoon region to the North China monsoon region whereas sensible heat,potential and kinetic energy are transported from South China Sea monsoon region to Indian monsoon region. These transports primarily take place in the upper troposphere. It is worthy to note that latent energy,though small in amount,is transported mainly by the low-level southwesterlies from Indian monsoon region to South China Sea,and it is an important factor for the monsoon rainfall. The predominant oscillation periods of the energy flux in the two southern monsoon regions are longer than the two northern monsoon regions,being about two weeks and four weeks for the former and about two weeks and three weeks for the latter. The oscillation period at upper level is longer than at lower level,with the weekly oscillation mainly occurring at the lower levels. Difference in initial phase may exist between the upper and lower levels even though the periods are identical. This phase lag is probably an important cause of periodic occurrence of strong convective weather.