A critical analysis of literature reveals that there is a strong possibility to enhance the biogas production under field conditions. Use of certain inorganic, organic additives seems to be promising for enhancing biogas production.Among different types of biomass (plant and crop residues) used as additives, some have been found to enhance the gas production manifolds.However their utility is limited due to the seasonal availability in different regions.Als o, clogging of the reactor in the long run is another problem observed under field conditions.Practical aspect of using pure microbial culture as additives should be looked into, in view of certain problems especially human health and ecodynamics. Further techno-economics of using additives on daily basis needs to be worked out by further extensive experimentation at field level.