According to the new rules of criminal evidence, the authenticity and identity of appraisal materials have become the prerequisites for the conversion of appraisal opinions into verdicts. This is obviously a major change in China's criminal evidence system. Through this change, we can find judicial The policy makers of the reform already have a new theoretical understanding: the identification of physical evidence is the premise and basis for the start of the judicial identification process: without the authenticity process, the "judicial identification opinions" of any professional on physical evidence will be There is no legal significance; physical evidence as a kind of "submission materials", in the case of reasonable doubt about its authenticity and identity, the appraisal opinion will not be qualified as the basis for finalization. The most appropriate keywords extracted from this text are. ['Basis of Verification of Criminal Evidence.', 'The basis for finalizing judicial reform opinions on judicial reform.', 'Judicial reform of the criminal evidence system of appraisal materials.', 'Evidence system for judicial appraisal procedures.']