In 20021year, the number of doctoral graduates in China reached 128222, an increase of 12832 over the previous year, with a growth rate of 1 1%. 202 1 The passing rate of national doctoral graduates is relatively high, because the quality of our students is getting better and better. Secondly, the school is becoming more and more rigorous, the teachers are stricter, the students are working harder, and the learning atmosphere in the society is very good, which leads to the high quality of doctoral thesis. It is easy to get my graduation certificate as a graduate student by defending my graduation thesis.