Based on co-integration test analysis,China's export has promoting effect on economic growth of China and China's import has certain inhibiting effect on the economic growth of China,but the inhibiting effect of the import is much less than the promoting effect of the export on the economic growth of China.According to short-term dynamic relation,the export and import have promoting effect on economic growth of China but promoting effect of export on economic growth of China is much less than the import.Granger Causality Test shows that the relation between China's export and economic growth is weak.