Objective To investigate the relationship between type D personality and post-traumatic stress disorder symptoms in survivors after the Zhouqu debris flow disaster.Methods In tatal,213 residents randomly sampled from the Zhouqu debris flow area were assessed one year after disaster.Questionnaires included the posttraumatic stress disorder check list-specific version(PCL-S) and type D personality scale(DS14).Results The prevalence of Type D in the post-disaster sample was 51.17％ accessed by the DS14,compared with 31.1％ prevalence in chinese college students.PTSD symptoms in survivors with type D were significantly severer than those without type D.Initial traumatic feeling,economic loss and negative affectivity were significant predictors of PTSD symptoms in survivors with type D.Conclusion Type D personality is positivel correlated with PTSD and may be a vulnerability factor for PTSD symptoms.