本书提出了刑事审级制度之审级独立、上诉不加刑、有限审查等原则。对法治发达国家的刑事审级制度进行分析。对我国刑事审级制度的改革方案进行评析和探索。This book proposes principles of the system of criminal trial grade, including trial grade independence, non-adding penalty in appealing and the limited examination. It analyzes criminal trial grade systems in countries with the developed rule of law and evaluates and analyzes the reform scheme of the trial grade system in China.