The three most difficult majors in Southwest University's postgraduate entrance examination are computer science and technology, applied statistics and accounting.

1, computer science and technology has attracted a large number of candidates for the exam because of its wide application fields and good employment prospects. The competition is fierce and the exam is difficult.

2. The applied statistics major is relatively difficult to take the postgraduate entrance examination because of its strong professionalism and application. This major requires candidates to have a solid mathematical foundation and good data analysis ability, and the postgraduate entrance examination topics often involve complex statistical theory and practical problems, which is difficult.

3. Accounting has always been one of the hot majors in postgraduate entrance examination because of its practicality and good employment prospects. However, due to fierce competition and low enrollment ratio, the difficulty of the exam has also increased accordingly.