This invention relates to a method for preparing fatty acid esters. The method comprises: mixing grease, C1-8 monoalcohol and organic amine catalyst, reacting at 120-280 deg.C under 5-12 MPa, and separating fatty acid esters from the reaction products. The organic amine catalyst is selected from C2-8 fatty amine, alicyclic amine, alcohol amine and pyridine, and is 0.5-10 wt.% of the grease. The method has such advantages as mild reaction conditions, high fatty acid esters yield, simple process and low erengy consumption, and the catalyst does not need separation from the products. |