The paper analyzes the change trend of Hubei province grain price and its influence on CPI, based on data from1990-2014. The analysis results show that the grain price goes through a change of early rising and later reducing during1990-2014, and smoothly fluctuated in recent years with a downward trend; grain price and CPI fluctuations have a consistent trend, but the grain price volatility is ahead of CPI fluctuation; grain price has positive influences on the CPI; there is a longterm equilibrium relationship between them, namely,grain price is a significant cause of CPI fluctuation. Therefore, we should take various measures to stabilize grain price in order to stabilize the CPI.
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