Preparing fatty acid methyl ester was achieved by reap oil ester exchange reaction by using new type solid alkali catalyst(LDH/LDO).The yield was over 98.5%and the operation simple.

• 采用新型固体碱催化剂LDH/LDO进行菜油酯交换反应制备脂肪酸甲酯，产率达98.；5%25以上。