This study focused on the issue of quantifying the heterogeneous spatial characteristics of Meiyu rainfall over Jiang-Huai regions. Based on the 1960-2007 daily precipitation data, the spatial concentrated degree (SCD) and spatial concentrated region (SCR) are used to identify the heterogeneous spatial characteristics. The results show that the Jiang-Huai Meiyu rainfall is mainly concentrated over the Yangtze River region in 1980-1999 and the Huaihe region in 2000-2007. Moreover, non-significant increasing trend is also found during 1960-2007. When the Meiyu rainfall mainly locates over the Yangtze River regions, the rainfall concentration is more significant. The associated atmospheric circulation regression analysis shows that the Meiyu rainfall may be more concentrated when both the western Pacific subtropical high and the East Asia subtropical westerly jet move southward.