Objective    To investigate the incidence of posttraumatic stress disorder (PTSD) and mental health in rescue servicemen after Wenchuan earthquake．    Methods    Depression

anxiety and somatization of rescue servicemen in 3

12 and 18 months after Wenchuan earthquake were investigated by random sampling using the PTSD checklist-civilian version (PCL-C) and self-report symptom checklist 90 (SCL-90)．    Results    The incidence of PTSD in rescue servicemen with their PTSD ≥ 38 was 23.80%

14.86% and 3.27%，respectively

in 3

12 and 18 months after Wenchuan earthquake (Chi square=28.386

P=0.000).  The re-experience (F=23.377

P=0.000)

avoidance reaction (F=37.649

P=0.000)

regain of consciousness (F=28.522

P=0.000)

total PTSD score as well as its 17 consciousness indicators

depression (F=8.021

P=0.000)

anxiety (F=8.537

P=0.000) and somatization (F=4.306

P=0.000) were also significantly decreased in rescue servicemen  in 3

12 and 18 months after Wenchuan earthquake.     Conclusion    The incidence of PTSD shows a tendency to decrease and the mental health of rescue servicemen improves gradually after Wenchuan earthquake

thus providing the evidence for working out the program of maintaining the mental health of rescue servicemen after rescue．