In practice, the preliminary investigation by public security organs has in effect replaced criminal investigation. A large number of administrative enforcement means have penetrated into initial investigation, which results in the substantiation of preliminary investigation and many other problems. China should abolish the case filing procedure or lower the standard for filing criminal cases, directly initiate criminal investigation on criminal suspects, and convert the investigation of administrative illegal acts into criminal investigation once initial investigation confirms that a crime has been constituted. Preliminary investigation is an act of administrative law enforcement. The elaboration on criminal prosecution standards and the use of big data in public security law enforcement provide the data standard and technological supports for transforming preliminary investigation into administrative law enforcement. The legislation on the use of administrative evidence in criminal proceedings provides the institutional premise for the connection between preliminary evidence taking and criminal evidence, thereby confirms the experiences of public security and judicial organs in law enforcement and judicial interpretation. China should refine and systematize criminal prosecution standards of public security organs, revise Article 65 of the Provisions on the Procedures for Handling Administrative Cases by Public Security Organs, give full play to the role of big data in the handling cases, raise the standards of administrative enforcement by public security organs in accordance with the principle of proportionality, intensify supervision by procuratorates over administrative law enforcement activities, strengthen mechanisms for the internal and external supervision over public security organs’ handling of cases involving the connection between administrative and criminal proceedings, and regulate the restraint mechanism for converting administrative evidence into criminal evidence. |