【摘要】The paper studies the oversensitive consumption behaviors of Chinese rural people based on the varying-coefficient model using the sample during 1978～2003, and the results show there exists obvious motivation of precautionary saving. Then going on estimating the degree of motivation on the basis of the model appertaining precautionary saving, and the conclusions show there exist the obvious uncertainties of future consumption expectations,which point out that descending the motivation of precautionary saving and the liquidity constraints is the important policy on the present condition of shortage requirement of rural.