Suspects and the truth of crime in this kind of case can be easily found out,so we should put the emphasis on the following two aspects: firstly,evidence standard should be determined to set the aim of detection and evidence collection according to the rules of criminal law on infringement of business secret;secondly.

The determination and function of the rule of evidence must be inspected by the standard of evidence.

On the one hand,evidence criteria of public persecution are not an independent issue in theory;on the other hand,evidence criteria of public persecution in China and foreign countries are not in a common line of good or bad,and all of them obeys the logic of the legality and effectiveness of the right of public persecution.

On that basis, through summing up the legislative intentions and primary characteristics behind these two standards, analyzing and comparing the common ground and the differences between them, a conclusion has been educed, that is, the evidence standard of prosecution adopted by a country correlates closely with this country s procedure model and legal culture tradition, even more determined .

In these viewpoints, the standard of preponderance of the evidence and the standard of high probability are most prominent.