The soil organic carbon stock (SOC) is an important element which plays a principal role in climate change. Due to wildfire in forest ecosystems, the changes in SOC stock are among the relevant research issues. The accelerated erosion that occurs after loss organic matter is a major factor affecting the sustainability of these environments. This study aimed to assessment the water erosion on soil SOC stock after wildfire on the island “La Galite Archipelago”. This assessment was studied using the empirical erosion model RUSLE (Revised Universal Soil Loss Equation). Data was collected on different sampling points of the La Galite for measurements and calculations of carbon stocks. The results showed that the SOC stock varied between 11 and 49 t/ha, the erosion carbon map showed that after wildfire of La Galite Archipelago, most of the areas affected by the fire belongs in the highest severity class of susceptibility (> 50%) of organic carbon.