Testimony is the main type of procedural evidence, and testifying is the critical element in criminal procedural evidence system, so criminal witness testifying system, whose core is to testify in court, became an important subject of the criminal judicial reform.

In order to identify the facts of the case, the principle of direct and verbal trial is an inevitable requirement of modern litigation system in the trial of criminal cases, and the criminal witnesses must testify in the court.

Criminal witnesses are rich in value, It embodies the procedural fairness and the rule of law to promote the concept of procedures and requirements, It better to protect the defendant’s right of action, will also help to identify the facts.

On reasons why the criminal witness refuses to provide evidence;

The rule that criminal witness appearing in court as a witness is one of the hot research points in the evidence law,in our country the technical studying of the question is more than theoretical research,it seems that there already has broad acceptation on the theoretical basis of the question,i.

Protection of the rights of a criminal witness has highlighted research on legal procedings law around the world, including China.

On the Judge s Attesting Activities and the New Court Trial System──Also some reflections on perfecting criminal evidence system of our country;

This article not only analyses the theory and correlated problems on burden of criminal proof and the standard of proof, from the academic vision of criminal evidence system, but also explains the use of it throughout our criminal proof from the procedural vision of judicial operation so as to probe a macro-guide on the refor.