1. Cross-examination refers to the activity or process in which the parties, agents ad litem and the third party explain and debate the authenticity, legality, relevance and existence and size of the evidence presented by the parties and the third party under the auspices of the court.

2. Legal basis: Article 66 of People's Republic of China (PRC) Civil Procedure Law.

The evidence shall be presented in court and cross-examined by the parties. Evidence involving state secrets, commercial secrets and personal privacy shall be kept confidential. If it needs to be presented in court, it may not be presented publicly.

Second, what should be paid attention to in cross-examination?

Attention should be paid to the following points during cross-examination:

1. The evidence recognized and recorded by the parties in the process of evidence exchange can be used as the basis for determining the facts of the case without cross-examination, but the judge should explain it in court. The evidence recognized by the parties in the process of evidence exchange shows that both parties have no objection to the probative force of the evidence;

2, involving state secrets, commercial secrets, personal privacy or other evidence that should be kept confidential by law, shall not be publicly cross-examined at the hearing;

3. When conducting cross-examination of documentary evidence, physical evidence and audio-visual materials, the parties have the right to require the production of originals or original evidence;

4. Cross-examination generally adopts the method of one certificate and one quality, one by one; You can also cross-examine a group of relevant evidence with the consent of the other party. When a case has more than two independent claims, the parties can cross-examine each claim one by one. The court shall record the cross-examination of the parties in the record, which shall be signed or sealed by the parties after verification. Evidence that has been cross-examined shall generally not be cross-examined.