Bathymetric map is a essential tool in resource management as well as in marine survey and research. It can be created as 2D or 3D map. Up to now, most of the sea bed topographic map has been established in 2D map. The 3D seabed topographic model is not only important in many fields such as marine installation, archeology but also crucial in maritime navigation for the navy. This paper introduces the method to establish and visualize a 3D model of seabed topography from multi-beam echo souding and Side Scan Sonar data. The established model allows users to visually monitor the bathymetric map in 3D. The experimental result at Phan Ri, Binh Thuan province shows that the root mean square of depth is ±0,379 m, equivalent to approximately 1% of the actual depth of the area. It can be seen that the experimental results completely meets the requirement for establishment of seabed topographic map according to the State regulations.