In reservoir stimulation, sandy conglomerate has strong heterogeneity and complex fracture network. A three-dimensional model was obtained by scanning the rough surface, and the rough surface of the sandy conglomerate fractures was copied. By building a sand-laying device and conducting dynamic sand-laying experiments, the proppant migration rules in fractures and sand-laying shapes under different displacements, different particle sizes and different sand ratios were obtained. Among them, the equilibrium height of the sand embankment is most affected by the displacement and sand ratio. As the sand ratio increases, the equilibrium height of the sand embankment becomes higher. As the displacement increases, the equilibrium height of the sand bank becomes smaller. This paper provides a deeper understanding of the proppant settlement and migration rules in sandy conglomerate reservoirs. It is significance for the optimization of on-site fracturing parameters in such reservoirs.