Objective   To investigate the occurrence circumstance of acute stress disorder (ASD)

clinical features and related risk factors

in the officers and soldiers who had gone to Beichuan county to provide disaster relief.   Methods   We used the self-general questionnaire

post-traumatic stress symptoms self-rating scale (PCL-C)

perceived social support scale (PSSS)

and coping style questionnaires (SCSQ) to assess the 126 subjects

combining with semi-structured interviews to determine and compare the  ASD group and control group

and then analyzed the related factors.   Results   The prevalence rate of ASD officers and soldiers was 13.49%

with main symptoms of repeatedly breaking into painful memories

nightmares

reproducing the scenes of traumatic events

strong trouble of psychological pain

decreased interest

sleep disorders and emotional instability. These main symptoms of ASD interacts each other

and were reduced with positive response and good social support.    Conclusion   In the phase of acute stress (one month)

the officers and soldiers taking part in earthquake relief have symptoms of ASD

so we should  strengthen the necessary psychological assessment and comprehensive psychological intervention means

in order to slow down psychological trauma after disaster

prevent and reduce the possibility that ASD turns into post-traumatic stress disorder (PTSD).