Through an analysis of the effects of Guangdong on exports from other provinces, this paper examines China＇s interregional relationships regarding exports. We utilize provincial level data from 1998 to 2008 and apply the system GMM to estimate an empirical model derived from the gravity equation. The results indicate that Guangdong significantly crowds out exports from other provinces. Coastal provinces are less affected than their non-coastal counterparts. In coastal areas, the displacement effect on the Yangtze River Delta is less than that on the Pan Bohai Rim. Further research reveals that the improvements in service industries, labor productivity, capital-labor ratio, and agglomeration of manufacturing industries have significantly reduced export competition. Additionally, a province with a larger market potential or a lower degree of market disintegration is less affected by Guangdong＇s export competition.
