1. objectivity Any criminal act is committed at a certain time, place and under certain conditions.
2. Relevance. The objective facts as evidence must have some connection with the facts of the case, so that we can know the real situation of a certain part or aspect of the case.
3. legitimacy. It can only be collected by investigators, prosecutors and judges according to legal procedures, or provided by defense lawyers according to law.
Two, the principle of judicial trial mainly includes the following aspects:
1. Judicial justice, including substantive justice and procedural justice. This is required by the nature of judicial activities and the inherent spirit of law.
All citizens are equal before the law. These include: 1. The law is equal to all citizens. Two. Citizens enjoy equal rights and assume equal obligations according to law. Three. The legitimate rights and interests of any citizen are protected by law, and any citizen's illegal behavior must be investigated by law.
3. Take facts as the basis and law as the criterion. Based on facts is based on objective facts to exclude subjective imagination, analysis and judgment. We should try cases in accordance with legal norms and standards and strictly follow legal procedures.
4. The judicial organs independently exercise their functions and powers according to law.
Three, the judge can review and determine the single evidence from the following aspects:
1. Whether the evidence is the original, and whether the duplicates and duplicates are consistent with the original and the original;
2. Whether the evidence is related to the facts of this case;
3. Whether the form and source of evidence comply with the law;
4. Whether the contents of the evidence are true;
5. Whether the witness or the person providing evidence has an interest with the party concerned.
Legal basis: Criminal Procedure Law of People's Republic of China (PRC).
Article 46 In sentencing all cases, emphasis should be placed on evidence, investigation and study, and confessions should not be trusted. If only the defendant confesses and there is no other evidence, the defendant cannot be found guilty and punished; If there is no confession from the defendant and the evidence is really sufficient, the defendant may be found guilty and punished.
Article 162 In trying a case, if the facts of the case are clear, the evidence is reliable and sufficient, and the defendant is found guilty according to law, the court shall make a guilty verdict.