Since 2012 when the Criminal Procedure Law stipulated that the defense counsel can verify evidence with the defendant at the prosecution stage, the theoretical circle and the practical circle debated over the scope of the evidence for verification. On the basis of understanding the purpose of verification of evidence in a narrow sense, the side of the scope-limitation argued that the type, the scope of previewing evidence verification, and the right of checking only belong to lawyer. However, from the legislative reasons to protect the defendant's effective quality certificate, to maintain the basic structure that the lawyer verifies the evidence with the defendant, and to prepare effectively for the defense, the defendant should conduct a comprehensive examination of the evidence. Therefore, the defense lawyer verifying the evidence fully with the defendant has legitimacy.