Abstract: A new process of rapid monoesterification of adipio acid at a low temperature is introduced.It is found that the esterification can be carried out very economically for it can be carried out at a temperature as low as that of 80 C and can be heated up by evaporation of water, not necessarily by electrothermal. Moreover, corrosion can be avoided since catalysts of strong aoid and strong alkali are substituted by resin catalysts. And monoesterification can be fulfilled in half the time spent on ordinary processes.