In this study, the characteristics of autobiographical memory in traumatized individuals were investigated by means of meta-analysis. Methods: Through literature search and examination using China Knowledge Infrastructure, WanFang Database, Nation Library of China, PubMed, Science Direct, Google Scholar, and ProQuest, 22 studies and 56 independent effect quantities were obtained, including a total of 1811 subjects. Meta-analysis was performed on this data. Results: The meta-analysis showed that the basic characteristics of the autobiographical memory of traumatized individuals were the reduction of specific autobiographical memory and the increase of generalized autobiographical memory. Female traumatized individuals showed a greater reduction of specific autobiographical memory than male, and youth individuals showed greater reduction of specific autobiographical memory than adult individuals. Gender and age showed no significant influence with respect to generalized autobiographical memory. Conclusion: Traumatize individuals express a reduction in specific autobiographical memory and an increase in generalized autobiographical memory. In addition, the gender and age of the subjects can influence the quantitative expression of autobiographical memory characteristics