The difficulty of postgraduate entrance examination largely depends on the content and scope of the examination. Postgraduate subjects include politics, English, mathematics and specialized courses. It involves a wide range of knowledge points. For non-science students, math and professional courses may be more difficult, while for science students, politics and English may be relatively difficult. In addition, the postgraduate courses in different schools are also different, which brings greater challenges to candidates. The fierce competition for postgraduate entrance examination is also one of the important factors to measure the difficulty of postgraduate entrance examination. Every year, a large number of students apply for graduate students of Nanjing Forestry University, but the number of graduate students is relatively small, which leads to fierce competition. According to statistics, the admission rate of postgraduate entrance examination is generally low, and the admission rate of some popular majors is even lower than 5%. This means that candidates need to stand out from many competitors before they have a chance to be admitted. This fierce competition undoubtedly increases the difficulty of postgraduate entrance examination.