Pre-defense refers to the defense before the formal defense, which is usually conducted a few months before the formal defense. The formal defense is generally conducted when the graduate students are nearing graduation, and the graduate students generally graduate in April 38+10 or July.

Pre-defense is to defend in the thesis group, show your graduation thesis and PPT to the tutor and the students in the group to judge whether there are any loopholes, and then the tutor will give relevant suggestions and initially put forward some defense questions to prepare for the formal defense.

The purpose of pre-defense is to review the graduation thesis again, so that students can experience the process of defense, and the purpose is to find mistakes and improve deficiencies.