Abstract: By means of diagnostic study on two intraseasonal progressivel retrogressive processes of anomalous Subtropical High in West pacific using daily 2.5°×2.5°grid point data of ECMWF in Julies and Augusts, 1980 and 1983, a number of interesting facts are revealed. The anomalous progression and retrogression of this high is intraseasonally teleconnected with the one in the eastern Pacific, shown as low-frequency waves propagating westward along a latitudinal wave train across the northern Pacifici the same oscillatary displacement of the eastern Subtropical High is again triggered by the variation of convergent sink of upper tropospheric divergent wind field in the eastern Pacific, resulted from anomalous heating through the monsoon area in South Asia and trade-wind zone in the Pacific Ocean.