Abstract: Based on the groundwater monitoring data from 2013 to 2015, SPSS cluster analysis and land-use-type were used to analyze the variation rules and influencing factors of the dynamic change of water level in Yinchuan plain on the time scale and space scale. It is found that the groundwater dynamics in Yinchuan plain are divided into four types:runoff type, irrigation type, rainfall-evaporation type and mining type. The dynamic types of human-influence (irrigation type and mining type) are widely distributed among them, accounting for about 1/2 of the total area of Yinchuan plain. In terms of time scale, the change trend of the four dynamic types is obviously different because of different influence factors. From the perspective of the dynamic trend of the whole year, the runoff-type shows M-type change. The irrigation-type shows W type change. Rainfall evaporation type shows Λ type change. The mining type shows Z type change. Through simulation, the optimal annual mining volume is 45%~50% in summer and 15%~20% in winter. On the spatial scale, due to the influence of topographic factors, the groundwater dynamic type changed from west to east as runoff type, mining type and irrigation type. On this basis, a reasonable way of exploiting groundwater resources in Yinchuan plain is discussed, which provides a scientific proof for sustainable exploitation and utilization of groundwater resources.