Anaerobic fermentation of organic waste has received widespread attention due to the enormous ecological and financial benefit it provides. It reduces wastes via reprocessing, saving capitals, lowering CFC gas emissions, and increasing financial flexibility in an indefinite future towards energy generation and garbage dumping. By minimizing landfill area, the influences of landfilling, and landfill preservation, the productive use of local garbage through recycling conserves resources. By lowering harmful emissions and pollutants, converting garbage as a sustainable energy resource can help the economic growth. As a result, the goal of this mini-review is to summaries critical criteria and provide useful data for an effective anaerobic process. It also discusses the advantages and disadvantages of various anaerobic processes for converting organic waste, as well as reactor technologies. Furthermore, this research emphasizes the difficulties and future prospects of the anaerobic system. Suitable heat, pH, inoculum to waste proportion, proper blending, and tiny particle size were all key components in an effective and efficient anaerobic process. As not all kinds of methods and digesters were successful to process the organic wastes, choosing the right anaerobic method and reactor is critical. This research is critical for continued work on waste-to-energy generation and gives crucial information on novel waste handling. Therefore, it can be suggested that the administration expand its funding for anaerobic process and support the vast untapped latent of bioenergy generation.