Abstract: For a case in which the subtropical high over the western pacific (SHWP) shifted to northwest and mei-yu at Yangtze River valley ended, several numerical experiments on SHWP activityinfluenced by heating in South-Asia monsoon area are carried out. The results indicate that the enhancement of positive heating in South-Asia will produce one wave train, which propagates northeastward from the maximum heating center, and one strong positive anomaly center will appearfrom Noth-China to Japan in the third day and it will result in the enhancement of SHWP. Thecomparison of influences upon SHWP between the heating in South-Asia monsoon area and thatin ITCZ area south to SHWP is also carried out. It was pointed out that the heating in South-Asiamonsoon area is in favor of SHWP movement to the north while the heating in ITCZ area is in favor of SHWP stretch to the west. So far as the reponse to the influence on SHWP is concerned,the heating over South-Asia monsoon area favors enhancement of SHWP after the third daywhile the heating over YTCZ south to SHWP but after the fifth day.