Legal analysis: "Detailed Rules for the Implementation of Public Security Judicial Appraisal" requires that in the process of criminal proceedings, actors who have doubts about certain professional issues can apply for judicial appraisal. Because the result of judicial expertise will affect the result of criminal proceedings to a certain extent, the actor should go to a qualified institution for judicial expertise according to law. (1) Open procedures; (2) public appraisal; (3) Open charges.

The fees for judicial expertise shall be strictly implemented in accordance with the relevant provisions of the local materials committee, and the scope shall not be expanded or the fees shall not be raised without authorization.

Legal basis: Criminal Procedure Law of People's Republic of China (PRC).

Article 146 In order to find out the facts of a case, when it is necessary to solve specialized problems in the case, a person with specialized knowledge shall be appointed to make an appraisal.

Article 148 The investigation organ shall inform the criminal suspect and the victim of the expert opinions used as evidence. If a criminal suspect or victim applies, he may make supplementary appraisal or re-appraisal.

Article 147 After conducting an appraisal, an appraiser shall write an appraisal opinion and sign it. If an appraiser intentionally makes a false appraisal, he shall bear legal responsibility.