Abstract: Amine polyether for construction of high performance drilling fluid is a polyether terminated by a primary or secondary amine group. The amine group is usually a primary amine group, secondary amine group or tertiary amine group containing active hydrogen. As a highly effective inhibitor, amine polyether has been used more and more in drilling fluids. However, there are few researches on its physicochemical properties, especially the determination of amine group content which plays a key role in inhibition. In this paper, a method was established to determine the total amine value of amine polyether for drilling fluid by optimizing the conditions, and the total amine value of amine polyether with different molecular weight and different functional degree was determined, with the relative average deviation≤3%. The establishment of this method has important guiding significance for the quality control and field application of amine polyether.