Abstract: According to the principle of the consumption demand of the water yield for growing field crops and its relationship with the precipitation,the dynamic variation characteristic of the regional groundwater pumpage for agriculture and the shallow groundwater level responding to the precipitation in North China Plain from 1986 to 2000,this paper suggests the regular contrary change of the regional groundwater pumpage for agriculture responding to the precipitation,the consumption demand of the water yield and the annual pumpage increases or decreases with the annual precipitation. The particular safeguard role of groundwater to the safety of the irrigation of the grain crops in North China Plain during successive low dry years is indicated from above results. A new method is suggested to evaluate the used level,the rationality and the safe potentiality of the actual regional groundwater pumpage for agriculture,and predict future pumpage,which is significance to the study of the rational use of the groundwater and the ensure safety for the supply water for the agriculture areas short of water resources.