Abstract: Post-disaster Psycho-trauma has become a hot topic in the field of clinical psychology and psychiatry.The relationship between acute stress disorder(ASD)and posttraumatic stress disorder(PTSD)has been put forward.This article gives an overview of predicting PTSDthrough ASD.The author looked into the limit of predictability to PTSDby the diagnosis of ASD,by the symptoms of ASD(dissociation,re-experience,avoidance,increased arousal),and by the cognitive model or the narrative pattern.In conclusion,the author believes there are limitations to predict PTSDby either the diagnosis or the symptoms of ASD.

Key words: acute stress disorder, posttraumatic stress disorder, predictability