Objective: There are differences in functional division and legal standards between healthcare security administrative law enforcement agencies and judicial authorities regarding evidence collection, fixation, and admissibility. While the two systems are interconnected, each has its own focus. To address the issue of insufficient conversion of administrative law enforcement evidence into judicial evidence in healthcare security cases, evidence collected by healthcare security law enforcement departments must meet the evidentiary requirements for criminal proceedings. Methods: Normative analysis and empirical research methods were employed to conduct ontological research on the form and substance of the evidence review mechanism. Criminal cases related to medical insurance funds in Beijing City were collected from the China Judgments Online database, with statistical analysis focusing on data such as year, cause of action, criminal behavior patterns, and titles of evidence. Results: Based on theoretical and empirical analysis, key points for evidence fixation were summarized, including documentary evidence, electronic data, audio-visual materials, inquiry transcripts, and expert opinions. Conclusion: Standardizing evidence collection in accordance with criminal evidence standards during the administrative law enforcement stage can effectively bridge the gap between administrative and criminal proceedings, ensuring cases smoothly enter judicial procedures and receive fair adjudication.