The reason why the postgraduate entrance examination of polymer physical chemistry does not take mathematics is because the research and application of this major does not involve mathematics. Mathematics is generally not taken in the postgraduate entrance examination of polymer physical chemistry because the research and application of this major mainly involves the physical and chemical properties of polymer materials, as well as related experimental techniques and analytical methods. Therefore, in the postgraduate entrance examination, the subjects for this major mainly include polymer chemistry, physical chemistry, material science, and English comprehensive quality tests. Although mathematics is a basic subject, it is not a compulsory subject for this major.