Abstract: In order to study the relationship between gratitude and subjective well-being of military cadets, 330 undergraduate cadets in a military academy were measured by The Gratitude, Resentment,and Appreciation Test (GRAT), Satisfaction with Life Scale(SWLS) and Positive and Negative Affact Scale (PANAS). The results show that: compared with local college students, the gratitude status of cadets has certain uniqueness, reflecting the professional characteristics of soldiers, and the gratitude level of cadets has a strong predictive effect on SWB, which indicates that it is feasible to improve SWB of cadets through gratitude education.