关键词: 核心通货膨胀, 食品, 共同趋势, 共同周期, 长短期主导力

Abstract: Some Chinese scholars oppugn the scientificalness for applying the widely used measure of core inflation by excluding food and energy to measure China’s core inflation. Based on analyzing the definitions and measures of core inflation, this paper apply the technique to test permanent and transitory domain force in time series based on common trend and common cycle model proposed by Vahid and Engle (1993), making analysis on the feasibility for measure of core inflation by excluding food according to the monthly data of CPI by Category from 2001.1 to 2013.5 in China. The study turns out that the food price is not only the permanent domain force of CPI, but also the transitory domain force, so the measure of core inflation by excluding food don’t accord with the connotation of core inflation.