The postgraduate entrance examination for electrical automation major in Northeast Li Dian University is difficult, because in 2022, the number of college graduates exceeded100000, and the number of people taking the postgraduate entrance examination increased significantly compared with last year. According to statistics, this year's postgraduate entrance examination rate is about 20%, which is a popular major in electrical engineering automation. Therefore, the difficulty of postgraduate entrance examination is easy to imagine. Postgraduate entrance examination is not easy, because in Northeast Li Dian University, his postgraduate entrance examination rate is generally around 3% to 5%, which is not very high. One class, two or three students can take the postgraduate entrance examination.