Dali County is an important agricultural area in Guanzhong Basin, and is one of economically active areas in Shaanxi Province. Based on collecting some information and surveying the hydrogeological conditions, the authors evaluated the water quality of the shallow groundwater by conducting groundwater test and using the single norm method. This paper evaluated the safe area groundwater resource quantity in Dali County by adopting the information collection and numerical simulation technique. At last, the exploitation potential of the safe area groundwater resource was computed. The result indicates that the exploitation potential of the safe area groundwater resource in Dali County is up to 1687 ×104 m3/a. This conclusion has important significance for solving the contradiction between the supply and the need of the safe groundwater resource.