Abstract：The standard of truth is the criterion for testing and judging the truth, and is determined by the nature of truth.The essence of truth includes conformance, coherence and utility, thus there are three levels of the criterion for testing truth accordingly, that is, the standard of conformance, coherence and value.The three standards will be tested through the corresponding criteria, which are verified through practice and logical proof.All standards are interrelated and interacted with each other in the course of verifying the truth.Therefore, the verification of truth is a system with many standards and levels.

Keyword：essence of truth;standard of truth;verification system;