Blind evaluation: it is a system that organizes expert group evaluation, that is, anonymous submission, which means that the evaluation tutor does not know who the author of the paper is. Sending dissertations without the author's name to experts who can't know the author for evaluation should be the most objective. Blind evaluation can be divided into single blind and double blind. Blindness means knowing who the peer review tutor is, but the tutor doesn't know whose the paper is. And double-blind means that neither the tutor nor the author of the paper knows who it is.

External audit: refers to sending papers to experts from other units for audit. Some schools are managed by the degree office in a unified way, while others are guided by tutors. 90% of the experts appointed by the tutor submit papers for review, and they can only pass because of the good relationship between the experts and the tutor.

The main difference between blind test and external test lies in:

1, review methods are different. Blind trial means that the author of the paper must be anonymous. Although the external audit is to find a foreign unit to review the manuscript, the school usually sends it to the brother unit for review, which is relatively difficult.

2. The review time is different. Blind tests generally take more than one and a half months to produce results, and external tests generally take one month to end.

3. The pass rate is different. Blind trial is strict and objective, and the corresponding pass rate is relatively low. The passing rate of external audit is usually higher than that of blind audit.

4. Different goals. Generally, 30%-50% of master's dissertations take part in the blind test, while all doctoral dissertations have to pass the blind test before graduation. No matter whether it is a master's degree or a doctor's degree, the thesis must go through blind review and external review. External trial is easier to pass, but blind trial is more difficult to pass. Only when both judges pass can the defense be made.

To sum up, blind review and external review are two different ways of reviewing manuscripts. Before graduation, you must pass two peer review methods, whether it is a master's thesis or a doctoral thesis, it is a process. Therefore, we should pay attention to blind review and external review, understand the difference between these two reviews, and then actively prepare.