Objective      To identify the effects of life events and cognitive emotion regulation strategies on military stress reaction.       Methods      The Life Events Scale for Chinese military personnel

the Chinese version of Cognitive Emotion Regulation Questionnaire(CERQ-C) and The Military Acute Stress Scale were used to survey 1 137 soldiers from People’s Liberation Army and Chinese People’s Armed Police Force.       Results      Life events and cognitive emotion regulation strategies explained 25% variance of military stress reaction. Life events（β=0.385，P0.001）

rumination（β=0.138，P0.001）

positive refocusing（β=0.066，P0.05） and catastrophizing （β=0.119，P0.001） had significantly positive prediction for military stress reaction

and positive reappraisal had an obvious negatively predictable function to military stress reaction（β=-0.125，P0.001）. catastrophizing，positive refocusing，positive reappraisal and blaming others played significantly moderating roles in the relationship between life events and military stress reaction. The total score of the life events partially mediated the relationship between rumination and military stress reaction

covering the proportion of total effect of 25.6%.       Conclusion      It is relative whether a cognitive emotion regulation strategy is maladaptive or not. Different strategies could play different roles in the relationship between life events and military stress reaction.