The non-isothermal crystallization behaviors of poly(3,3-bis-azidomethyl oxetane) (PBAMO) were studied during cooling with different constant cooling rates by using differential scanning calorimeter (DSC). Results show that the relationship of peak temperature of crystallization process and cooling rate is expressed well via exponential decay equation,and the crystallinity reaches the maximum value when cooling rate equals 2 ℃·min^-1,while the fastest crystallization rate appears when cooling rate equals 5 ℃·min^-1. Ozawa exponent m obtained by using Ozawa equation increases with temperature increasing and can be divided into three regions: (1) T＜14 ℃,m＜3; (2) T=14-18 ℃,m=3-4.12; (3) T＞18 ℃,m approaches 5. The crystallization activation energy calculated from Kissinger equation is 59.37 kJ·mol^-1.