Based on European Center for Medium range Weather Forecasting 40 a reanalysis data, the abilities of 21 Coupled Ocean-Atmosphere General Circulation Models from Intergovernmental Panel on Climate Change Fourth Assessment Report to simulate the interannual variability of atmospheric circulation in East Asian in summer are evaluated. Results suggest that: (1)On the whole, the abilities of the models to simulate the interannual variabilities of different climate elements are poor. The simulation of 500 hPa geopotential height is better than those of sea level pressure and 850 hPa wind. (2)As far as the two main circulation systems over East Asia are concerned, the capability of the models to simulate the intensity and location of the subtropical high is better than that in India low pressure system. Most models can correctly simulate the enhanced trend of the subtropical high in the late 1970s. According to the standard deviations, the simulation of India low pressure system is better. (3)It is found from the evaluation of selected monsoon indexes that the performances of most models in simulating interannual variability 〖JP2〗of the circulation anomalous indexes are better than the indexes based on the the land-sea pressure difference and the meridional wind.