现代公诉制度具有案件分流、案件过滤和审判分流的内在功能。起诉之于审判所具有的外在功能受到西方诉讼理论的强调和重视,起诉之于审判的制约功能表现为:没有起诉,就没有审判;起诉范围决定了审理的范围和裁判的对象。我国公诉制度的外在功能,相对于对审判权的制衡,更加强调对侦查活动的监督;内在功能,相对于案件流量的调整,更加强调“构罪即诉”的追诉功能。调整和优化我国的公诉制度,要明确起诉的效力,强化起诉制度的案件分流功能,确立针对个罪的不起诉制度。 The modern prosecutorial system has the inherent function of case diversion, case filtration and trial diversion. The external function of the prosecution in the trial is emphasized and emphasized by the western litigation theory. The restriction function of the prosecution in the trial is as follows: there is no trial without prosecution; the scope of the prosecution determines the scope of the trial and the object of the referee. The external function of the system of public prosecution in our country emphasizes more on the supervision of investigation activities than on the checks and balances. The intrinsic function emphasizes more on the prosecutorial function of “criminalizing crimes” in relation to the adjustment of the flow of cases. To adjust and optimize the system of public prosecution in our country, we must clarify the effectiveness of prosecution, strengthen the diversion function of the prosecution system and establish a non-prosecution system for each crime.