Abstract: The nonisothermal crystallization behavior of PA6T was investigated via differential scanning calorimetry (DSC). Avrami equation, Ozawa approach and a new method developed by Mo were adopted to study the nonisothermal crystallization of PA6T, and activation energy value of PA6T was determined according to the Kissenger method. The results show that Mo method can be successfully applied to analyze the noncrystallization process of PA6T.