The tests of nuclear magnetic resonance(NMR) and tensile mechanical properties were undertaken, aiming to analyze the correlation between the transverse relaxation time and tensile properties of hydroxyl-terminated polybutadiene(HTPB) inhibitor at different temperature.One-way analysis of variance shows that temperature has a significant influence on transverse relaxation time.Transverse relaxation time increases linearly while the test temperature rises from 30 ℃ to 90 ℃.From 90 ℃ to 130 ℃,transverse relaxation time decreases,then follows by an increase.Within the range from 30 ℃ to 90 ℃,the rise of temperature brings down tensile strength, and makes elongation at break increase.The strength of the material at 100 ℃ is higher than that at 90 ℃, but the elongation is a slight lower.However, raising the temperature from 100 ℃ to 130 ℃,the elongation at break increases drastically while the material loses its strength,due to the influence of complicated chemical reaction and molecular thermal motion.Moreover,both the elongation at break and the tensile strength have the good correlations with transverse relaxation time.Based on that raltionship,the tensile mechanical properties of HTPB inhibitor can be predicted at different transverse relaxation time.