Abstract: The results from the coupled model, GOALSAVIM, developed by a researc h group of the Global Ocean Model and Coupling Model (LASG) at the Institute of Atmospheric Physics (IAP) of the Chinese Academy of Sciences .The model was used to study the climate change in East Asia. Analysis based on the mean results of the later 50 integration years (100 integration years in all) suggests that the coupled model basically reproduce main features of multiyear mean July large -scale pattern of precipitation, surface air temperature and 850 hPa wind field s in East Asia. Based on contrastive analyzed standardization of the vegetation net primary productivity (NPP), precipitation, surface air temperature and short wave radiant, seasonal variety of NPP is related to climate change closely becau se of twoway interaction of vegetation and atmosphere. The relation reveals the characteristic that those interrelated relationship are different in respective spatiotemporal distribution. According to singular value decomposition (SVD) analysis, the relationship between ecosystem and precipitation in the East Asia is explored. It shows that the onset and retreat of East Asian monsoon characte rized by the precipitation belt at East Asia corresponds to the spatiotemporal p attern of NPP, and the spatiotemporal pattern can reproduce migration route of E ast Asia in summer. The correlation coefficients between NPP and precipitation a re different in interannual variability because of the variation in vegetation types.