The utilisation of lignocellulosic biomass for biofuel production isfound to be cost-effective and environmental friendly. Considering theevolution and necessity for second generation biofuel production lignocellulosic biomass appears a promising substrate. On contrary, wecannot depend entirely on second generation biofuels because lignocellulosic biomass is not available all time (available in abundance on harvesting time). A balance should be maintained between fossil fuels, first generation biofuels and second generation biofuels to fulfil our energy demand in future. For more economical development of second generation biofuels, finding a new market will be useful. Utilisation of second generation biofuel in airlines and aircraft industries may be a new market which is environmental friendly as well. This review article would be helpful to find the best method of pretreatment according to the lignocellulosic biomass type. It would also provide concise information about various types of combinations ofpretreatment processes.