What is thesis topic defense? This is an important link in the evaluation of senior professional titles. Experts put forward unclear, detailed or incomplete articles at the defense meeting. These questions are limited to the academic scope of the article and the problems expounded in the article, and the author answers them. The purpose is to examine the authenticity of the article and master the author's knowledge. The topic applicant can let the experts know more about the argument basis of the article and the actual ability to deal with the topic through the defense, and can also be regarded as the senior thesis topic of the topic applicant. Generally speaking, the procedure of thesis defense is as follows: first, the topic applicant introduces his basic situation, then the defense team asks the topic applicant questions, and the topic applicant answers according to the questions, and finally scores. After the topic of the paper is published, the defense of the paper is also very important. Here, Bian Xiao needs to remind everyone to pay attention to the etiquette of the opening and closing remarks during the defense. The defense is the face-to-face communication of the defense team in the early stage, so it is required to be calm and accurate, so that everyone present can hear it. When facing the questions of the defense team members, you should concentrate on them and write them down in your notebook. Pay attention to caution when answering, make a quick response in a short time, answer or refute some questions with confident and fluent language and positive tone, answer uncertain questions, seek truth from facts and be sincere.