The admissibility rules of witness testimony are as follows:

(1) Rules of opinion evidence

When marking the papers, it is found that the witness testimony is speculative and critical, and this evidence cannot be used as the basis for deciding the case.

(II) Rules of evidence ability

Rules of evidence ability mainly refer to whether a witness's age, cognitive level, memory ability and expression ability, as well as his physical and mental state, will affect his testimony. This point is when testifying.

the testimony provided by a witness who is obviously drunk, poisoned by narcotic drugs or drugged by psychotropic drugs, so that he can't express it correctly, can't be used as evidence.

(III) Rules on the Legality of Evidence

The procedures and methods for obtaining witness testimony shall comply with laws and relevant regulations, and witness testimony obtained in the following ways shall not be taken as the basis for final decision:

Witness testimony obtained by illegal means such as violence, threat, deception or inducement;

testimony obtained by questioning witnesses without individual conduct;

written testimony that has not been checked and confirmed by the witness and signed (sealed) or fingerprinted;

if you ask deaf people, ethnic minority people who are not familiar with the local language and writing, and foreigners, you should provide what the translator does not provide.