It is understood that the chemistry postgraduate entrance examination of Suzhou University generally adopts the method of self-proposition. This means that the test paper was written by the teacher of the School of Chemistry of Suzhou University, instead of using other institutions or external question banks. This method can better reflect the teaching characteristics and teaching philosophy of the School of Chemistry of Suzhou University, and at the same time, it can better examine students' mastery and application ability of chemistry. In addition, self-proposition can better ensure the quality and appropriateness of the test questions and ensure the fairness and scientificity of the test. Of course, because the difficulty and content of the exam are designed by the teachers of the School of Chemistry of Suzhou University, candidates need to pay more attention to the understanding and mastery of the teaching content and characteristics of the School of Chemistry of Suzhou University in order to better cope with the exam.