Abstract: The domestic interregional trade of China has been developing prosperously; however, the related study is quite lagging behind, which is to a large extent due to the availability of the domestic interregional trade data. On the basis of summarizing and clarifying the four existing ways of data acquisition, i.e., the“Golden Tax Project”information system, the railway freight volume data, the input-output tables, and the estimation method, this paper picks out one method which can acquire domestic interregional trade data more systematically and comprehensively, that is, the method of“gravity model plus single-point estimation”supplemented by the input-output table. By applying this method, it tries to construct a China interregional trade database, which includes 36 industries in 28 provinces and in the years of 1987, 1992, 1997, 2002, 2007 and 2012, so as to provide a new idea for further studies on interregional trade.

Key words: interregional trade data; gravity model; single-point estimation method; input-output tables