Using the digital dam construction technology, considering the spatial difference of the constitutive model parameters caused by the spatial difference of the actual dam construction quality, a three-dimensional precise finite element model is built by estimating and valuing each element of the model. Then, a core rock-fill dam is taken as an example to analyze the influence of two possible construction schedule appearances on the dam structure behaviors. These appearances are designed to fill up to the flood-control elevation before flood season under the condition of construction schedule lagging. The result shows that the different construction appearances mainly affect the horizontal displacement, and have little effect on vertical displacement and stress. Therefore, it can provide guidance for planning the filling schedule of dam during the actual construction.