Thesis defense is one of the important links in postgraduate thesis training. The purpose is to make oral defense and discussion on the academic papers written, and to examine the master degree of the thesis theme and the problem-solving ability of graduate students. Usually, after the papers are submitted and approved, students will be asked to reply.

In some schools and disciplines, there may also be a form of multi-person defense. In addition, there may be a defense link in some quarterly evaluations and academic forums.