With the reform pilot results on streamlining the trial procedures being incorporated into the Civil Procedure Law of the People's Republic of China, the scope of application of the single-judge trial system has been expanded to the second instance civil proceedings. However, there are still many problems in the expansion of the scope of application, such as the excessively broad application of the single-judge trial system in the second instance proceedings and the unreasonable procedures for switching between the singlejudge trial system and the panel trial system. Therefore, this paper conducts comparative research on the trial organization forms in the second instance proceedings in a vertical and horizontal manner, and finally selects the system of single-judge trial in the accusation trial stage of the German Civil Procedure Law as a reference to propose suggestions for the improvement of the singlejudge trial system in the second instance civil proceedings in China.