Abstract: The history Autumn Trial Office of the Qing Dynasty is a dynamic history of development and evolution.Yongzheng thirteen years when established,the Autumn Trial Office is a responsible for the Autumn Trial of the paperwork service,for the Ministry of Justice in the Autumn Trial of the printing and distribution of the Autumn Trial Document.Since the seventh year of the Qianlong period,the Autumn Trial Office became to professional trial structure of the case of death-suspended and death-immediate.In the late Qianlong period,the professionalism of the Autumn Trial Office was further strengthened,with the emergence of the permanent officer and a number of expert officer.During Jiaqing and Daoguang period,due to the law museum codification function of the shell,the Autumn Trial Office and the Lvli Office transfer to the phenomenon of part-time,at the same time,many officer and not expert but seeking career preferences.The inherent attributes of the imperial system and the professional needs of the trial of doubtful cases,determines the Autumn Trial Office of the institutional evolution process is full of complexity and differences,both professional and elitist orientation,but also anti-professionalism and change in response to the times of the orientation,worthy of in-depth study.