The indictment-only doctrine in criminal procedure of Japan,the resulting product of adversary system,follows judgment centralism,guarantees the materializing of court trials,and realizes the directness,speech and antagonism of court trials,so as to ensure justice.

As a fundamental criminal principle legalized by modern countries ruling by law, the criminal trial central principle has been embodied in the criminal procedure in worldwide nations attributing to two legal systems.

Since the existence and development of judicial procedure are closely linked to those of procedure subjects,many problems in legislation and judicial practice of our country could be related to the definition and choice of central trial subjects.

The reform of investigative pattern under the tribunal judicial centralism controlling;

The Principle of Trial centered Criminal Procedure is justified by the need for fairly resolving the interests conflict between the government and the individual,and is widely recognized as an essential rule of criminal justice in international community.