In these conditions algal biofuel is only alternative and renewable source to replace the fossil fuels. It mitigate the harmful effects of fossil fuels on environment and it assist in maintenance of the healthy environment. The main causes for this are high yields, a near-continuous harvest stream, and the potential to site the algal bioreactors on non-arable land. Production of fuel from algae biomass can be done by different approaches as mechanically and non-mechanical way. Extract the biofuel from algae can be done by numerous ways. The most commonly use method is Trans esterification. Conversion of triglycerides into esters and glycerol by using different catalyst is the main strategy of trans esterification.