The multidisciplinary study of the beach in Sidi Bouzid is responsible for the implementation of its deposits dynamics is closely linked to the geomorphology and anthropogenic action within this range. It reveals a spatio-temporal variation of the marine dynamics. Indeed, sea erosion is very strong to the NNE and foreshore of the beach as well as in winter. However, sedimentation is well-developed in the SSW from the beach and at the level of the dune in the summer. The origin of sediments may be the Cretaceous limestones of the bedrock and Paleozoic metamorphic terrains of Jacqueline or magmatic Sidi Saïd Maachou. The transit of sediments is through the Oum Rbia node and then by the littoral drift. Therefore the aggressiveness of the dynamic marine and anthropogenic action, in relation especially with tourist activity, too influenced the geomorphology of the beach. If no precautions are taken and the laws, the development of coastal areas, are respected in this fragile and sensitive area, the consequences would be catastrophic, medium and long term, both on this beautiful beach, its environment and its socio-economic value.