In order to master the recharge situation between the two sides of the Aiyi river and groundwater in Yinchuan section,the paper selected the representative section of the river and built two monitoring sections of water level of river and groundwater on both sides of the river,and monitored the relationship between river water level and groundwater level in different time.The results show that in certain sections of the river, the water level of river is higher than that of groundwater level in long term, the amount of water recharge of river to underground reach 806000 m3/km,which enhanced the underground level on the two sides of river and resulted in the more serious salinization river soil ; in another section of the river, the water level of river is lower than that of groundwater, the river undertakes the discharge of groundwater which achieves 25580 m3/km every year. The result can provide technical support for the water regulation and soil salinization prevention and treatment on both sides of the Aiyi river.