In view of the problem of determining production by water inWulan Basin, Qinghai Province, in order to further understand the hydrogeological conditions and groundwater resources in Wulan Basin and evaluate its groundwater resources and exploitable potential, a mathematical model of groundwater resources in the study area was established based on the occurrence law of groundwater in Wulan Basin, combined with the exploration results and the exploitation layout of the proposed water sources. The results show that the exploitable groundwater resources in Wulan Basin are 85 000 m³/d, the exploitation coefficient of groundwater resources is less than 0. 4, and the exploitation degree is low. Comprehensive analysis shows that the exploitable potential of groundwater resources in Wulan Basin is huge.