The second year's research needs a thesis defense. According to the relevant information, it is necessary for graduate students to participate in the opening defense thesis, and the topic should be communicated with the tutor as soon as possible. The opening, writing and defense of the paper need the approval and signature of the tutor, and the tutor's opinion is very important. When the opinions of the topic selection are inconsistent with those of the tutor, it is necessary to communicate well with the tutor.