Abstract: Flume experiment is an intuitive and effective method for studying the formation, distribution and evolution of sandbodies. Usually the simulated sandbodies are cut into blocks for description of internal structures and their spatial distribution. In order to study the distribution patterns of sandbodies directly in a 3D manner, this paper proposed a 3D sandbody reconstruction method based on two-dimensional slices of the sandbodies formed in the flume experiment under two provenances. The method consists of the following steps. First, precisely dissect the simulated sandbody, and make coordinate registration for the acquired two-dimensional cross-sectional images using commercial modeling software, then digitize the identified sandbody. Using the digital results as the conditional data, modeling algorithms are performed for three-dimensional reconstruction of sandbodies. The result shows that after such a reconstruction, sandbodies may have better geometric shape and distribution characteristics from different sources in a 3D space, and have a better reference for prediction of sandbody distribution pattern in underground reservoirs.