The defense of master's thesis is generally between 15-30 minutes, subject to the regulations of each school. At the same time, the defense is different from the general oral examination, and the preparation work must be all-round. When entering the defense venue, you should bring paper manuscripts and defense outlines. Take good care of the test paper and read it carefully before replying. Both the self-statement in the defense and the teacher's questions are based on the content of the paper, and the key contents in the paper must be kept in mind.