There is a colose eorrelation between the Yellow River water and the ground water level. To understand the key fuctors and take measure can relax the influence of soil salination on agriculture produetion and maintain sustainable development, ecological health and environment-friendly of irrgation regions. Through the analysis of relation between the Yellow River water and groudwater level, the paper got the result that there is a close negative correlation between them, the change of water volume from Yellow River is one of the main reasons of the change of groudwater level.