The changes of shoreline profile are a natural phenomenon that occur on worldwide site and became concern of many researchers. Due to natural forces such as wind and wave of the seawater, the formation of shoreline can be changes and leads to erosion. Eventually, this work is aimed to conduct a simulation of sand sediment of 1 mm sand particles in the fluid flow of water using Discrete Particle Method-Discrete Element Method (DPM-DEM) to understanding the behavior of sand particle in the fluid flow. The simulation works reported that, the maximum velocity of 1 mm sand particle is 0.582127 m/s for every time step while the minimum velocity is varying for each time step. It is also found that, the lengthen of time will increase the possibility for the erosion to occur. The most critical area was determined through this simulation and it shows that the upper part of the sand sediment has the high risk that can leads to erosion.