Hydrogen Sulfide is the most important impurity that must be removed from the natural gas due to the  toxicity impact on human and environment and to prevent corrosion to piping and production facility caused. In this article, current technologies for the acid gas removal are selected and reviewed. The review includes absorption, adsorption, chemical conversion of H2S into elemental sulfur, and membrane reactor for H2S decomposition and desulfurization and non-thermal plasma using photo catalyst that the thermal decomposition and non-thermal plasma using photo catalyst are new technologies in this field. Recently, the most common process to remove H2S is absorption by Amine solution. It was also found that higher process efficiency can be achieved using combination of hollow fiber membrane contactor and absorption processes.