1. The blind check of doctoral thesis failed, probably because of the high duplicate check rate. First of all, if this paper itself has no practical basis or is innovative. At the same time, there are no topics cited by other scholars. To a large extent, it is impossible to pass the blind review of the paper.

2. The quality of the paper is poor, and it can't pass the blind evaluation. The quality of a paper is poor, the content of the paper is patchwork, the author has no original opinion, and the language logic is not smooth, so he can't pass the blind evaluation. If the paper is of good quality and has certain logic and basis, there will be no blind trial.

3. In addition to the above two questions, the selection of the format and materials of the paper will also lead to the failure of the paper. For example, the format of the paper is chaotic, the data is false, and the topic is not novel enough, which will lead to blind evaluation of the paper.